Angels

     Athletics

Mariners

Rangers

White Sox

Indians

Tigers      

Royals

Twins

Orioles

Red
Sox

Yankees

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Blue
Jays

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Locations ofAL teams for the 2010–2012 MLB seasons
West  Central  East

Diamondbacks

Rockies

Dodgers

Padres

  Giants

Cubs

Reds

Astros

Brewers

Pirates  

Cardinals

Braves

Marlins

Mets

Phillies

Nationals

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Locations ofNL teams for the 2012 MLB season
West  Central  East

The2012 Major League Baseball season began on April 5 because during the MLB Spring Training it was the first of a two-game series between theSeattle Mariners and theOakland Athletics at theTokyo Dome in Japan.^[1] On November 22, 2011, a new contract betweenMajor League Baseball and itsplayers union was ratified, and as a result, an expandedplayoff format adding two clubs would be adopted no later than 2013 according to the new Collective Bargaining Agreement.^[2] The new format of the 2012 postseason to used the 1 game series of the Wild Card round of the format for the 2012 postseason only.^[3] The restriction against divisional rivals playing against each other in theDivision Series round that had existed in previous years was eliminated, as theBaltimore Orioles andNew York Yankees squared off in one of the best-of-five LDS in theAmerican League. On April 4, 2012, it was the last day of the MLB Spring Training and ended with the newMarlins Park, as the newly renamedMiami Marlins hosted thedefending World Series championSt. Louis Cardinals. The regular season ended on Wednesday, October 3.^[4] The entire master schedule was released on September 14, 2011.

TheMajor League Baseball postseason was expanded to include a secondwild card team in each league beginning in the 2012 season.^[3] The season marked the last for theHouston Astros as a member of the National League. Following the sale to new ownerJim Crane, the Astros agreed to move to the American League effective in the 2013 season, and would be assigned to theAmerican League West, joining theirin-state rivals, theTexas Rangers.^[5]

TheMajor League Baseball All-Star Game's83rd edition was held on July 10 atKauffman Stadium inKansas City, Missouri, with theNational League winning the All-Star Game for the third consecutive year in an 8–0 shutout of theAmerican League.^[6] With the win, the National League champion earned home field advantage for theWorld Series, which began on October 24 and ended on October 28 when theSan Francisco Giants swept theDetroit Tigers. TheCivil Rights Game was held on August 18 atTurner Field, as theLos Angeles Dodgers beat the hostAtlanta Braves, 6–2.^[7]

The following managers were hired for the 2012 season after the former manager retired from baseball.

At the end of the 2011 season, the following teams made replacements to their managers.

**Melky Cabrera of theSan Francisco Giants was ineligible to win the batting title, at his request, due to being suspended for testing positive for testosterone. He finished the season with a .346 average.^[18]

• Adam Dunn (CWS):
  • Tied the Major League record for most opening-day home runs by hitting his eighth against theTexas Rangers on April 6. He tied the record held byFrank Robinson andKen Griffey Jr.^[19]
  • Set the Major League record tostrikeout at least once in each of his team's first 15 games of a season, by striking out in the first inning against theSeattle Mariners on April 22.^[20] He broke the record that was held byHowie Goss, who struck out in each of Houston's first 14 games in 1963. Dunn continued to 32 games before not striking out May 11 against theKansas City Royals.^[21]
  • Recorded his 1000th career RBI in the ninth inning on August 13 against theToronto Blue Jays. He became the 273rd player to reach this mark.^[22]
  • Hit his 400th career home run against theKansas City Royals on August 18. He became the 50th player to reach this mark.^[23]
• José Reyes (MIA):
  • Recorded his 100th careertriple in the ninth inning against theCincinnati Reds on April 8.^[24] He became the 162nd player to reach this mark.
• Alex Rodriguez (NYY):
  • TiedKen Griffey Jr. for fifth place on the career home run list with his 630th home run on April 13.^[25] Then one week later on April 20, Rodriguez hit his 631st home run to pass Griffey for fifth place on the career home run list.^[26]
  • TiedLou Gehrig for most careergrand slams with his 23rd against theAtlanta Braves on June 12.^[27]
• Adrián Beltré (TEX):
  • Scored his 1000th career run in the ninth inning against theMinnesota Twins on April 14.^[28] He became the 314th player to reach this mark.
• Todd Helton (COL):
  • Recorded his 350th career home run in the ninth inning against theMilwaukee Brewers on April 21.^[29] He became the 85th player to reach this mark.
• Rafael Furcal (STL):
  • Scored his 1000th career run in the eighth inning against theChicago Cubs on April 24.^[30] He became the 315th player to reach this mark.
• Paul Konerko (CWS):
  • Hit his 400th career home run against theOakland Athletics on April 25. He became the 48th player to reach this mark.^[31]
• Miguel Cabrera (DET):
  • Collected his 1000th RBI against theNew York Yankees on April 27. He became the 272nd person to reach that mark.
  • Hit his 300th career home run on July 22 against theChicago White Sox.^[32]
  • Became the first player to win the batting "Triple Crown" sinceCarl Yaztremski in 1967.
• Torii Hunter (LAA):
  • Scored his 1000th career run in the fourth inning against theMinnesota Twins on May 2.^[33] He became the 316th player to reach this mark.
• Josh Hamilton (TEX):
  • Hit four home runs in a game against theBaltimore Orioles on May 8.^[34] He became the 16th player in Major League history to accomplish this feat.
  • Became the first player in Rangers' franchise history to exceed 20 home runs by the end of May.^[35]
• Plácido Polanco (PHI):
  • Recorded his 2000th career hit with a two-run home run in the eighth inning against theHouston Astros on May 14.^[36] He became the 269th player to reach this mark.
• Jamie Moyer (COL):
  • With his two-run single against theArizona Diamondbacks on May 16, Moyer (at age 49 years, 180 days) became the oldest player in Major League history to record an RBI.^[37]
• Albert Pujols (LAA):
  • Hit his 450th career home run against theSeattle Mariners on May 24, becoming the 35th player and fourth-youngest to reach this mark.^[38]
• Melky Cabrera (SF):
  • Set the Giants' franchise record for most hits in May with his 50th hit on May 29 against theArizona Diamondbacks.^[39] He broke the record that was set byWillie Mays. On May 30, Cabrera singled in the eighth inning and tied the franchise record for most hits in any month with 51 that was set byRandy Winn in September 2005.^[40]
• Steve Lombardozzi Jr./Bryce Harper (WSH):
  • Became the first pair of rookies in Major League history to hit back-to-back home runs beginning with a first-inning leadoff shot on June 3 against theAtlanta Braves.^[41]
• Carlos Beltrán (STL):
  • Became the first switch hitter in Major League history with 300 home runs and 300 steals with his stolen base on June 15 against theKansas City Royals.^[42]
• Ichiro Suzuki (NYY)/(SEA):
  • Recorded his 2500th MLB career hit in the first inning against theArizona Diamondbacks on June 19.^[43] He became the 95th player to reach this mark.
• Jim Thome (BAL)/(PHI):
  • Hit his 13th career walk-off home run of his Major League career against theTampa Bay Rays on June 23.^[44] The home run set a Major League record for most career walk-off home runs, breaking the record he shared withBabe Ruth,Jimmie Foxx,Stan Musial,Mickey Mantle andFrank Robinson.
• José Bautista (TOR):
  • With his home run against theBoston Red Sox on June 27, Bautista set the Jays' franchise record for most home runs in a calendar month with 13. He broke the record that he shared withCarlos Delgado (August 1999),José Cruz Jr. (August 2001) and himself from May and August 2010.^[45] Bautista finished the month with 14 home runs.
• Aaron Hill (AZ):
  • Hit for the cycle on June 18 against theSeattle Mariners and on June 29 against theMilwaukee Brewers. Hill became the fourth player to hit for the cycle twice in the same season, and the first to do so in a calendar month sinceJohn Reilly in 1883.^[46]
• Yasmani Grandal (SD):
  • Became the first player in Major League history to hit a home run from each side of the plate for his first two Major League hits.^[47]
• David Ortiz (BOS):
  • Hit his 400th career home run in the fourth inning against theOakland Athletics on July 4. He became the 49th player to reach this mark.^[32]
• Derek Jeter (NYY):
  • With two hits on August 11 against theToronto Blue Jays, Jeter increased his season total to 150 and joinedHank Aaron as the only players in Major League history to post 150 or more hits in each of 17 consecutive seasons.^[48]
• David Wright (NYM):
  • Hit his 200th career home run on August 24 against theHouston Astros, becoming only the third player in Mets history do accomplish this feat.^[49]
  • Set the franchise record for most hits in team history on September 26 with 1,420. He broke the record that was held byEd Kranepool.^[50]
• Mike Trout (LAA)
  • With his 25th home run on August 28 against theBoston Red Sox, Trout became the youngest player in Major League history and first rookie to amass 25 home runs and 40 stolen bases in a single season.^[51]
  • Became the first rookie in Major League history to amass at least 30 home runs and 40 stolen bases in a season. At age 21, he also became the youngest player in Major League history with a30–30 season.^[52]
  • Became the first player in Major League history to hit 30 homers, steal 45 bases and score 125 runs in one season.^[53]
• Bryce Harper (WSH):
  • Became the third teenager in Major League history to record at least two multi-homer games in a single season with this two home runs against theChicago Cubs on September 5. The other teenagers that accomplished this feat wereMel Ott (1928) andKen Griffey Jr. (1989).^[54]
• Ryan Braun (MIL):
  • With his 200th career home run on September 16 against theNew York Mets, Braun reached the combination of 200 home runs and 100 stolen bases faster than anyone else in Major League history (five years, 114 days after his major-league debut).^[55]
• Ryan Howard (PHI):
  • With his 300th home run against theAtlanta Braves on September 22, Howard (also the 135th player to reach this mark) reached the 300-homer plateau in his 1093rd game, which is the second-fewest games that any player in Major League history has needed to get to that milestone.Ralph Kiner needed 1087 games to hit 300 home runs.^[56]

• Philip Humber (CWS):
  • Threw the21st perfect game in Major League history, defeating theSeattle Mariners 4–0 on April 21. This was the third perfect game in the White Sox's history, the last beingMark Buehrle'sperfect game on July 23, 2009.^[57]
• Matt Cain (SF):
  • Threw the22nd perfect game in Major League history, defeating theHouston Astros 10–0 on June 13. This was the first perfect game in the Giants' history. Cain tiedSandy Koufax's strikeout record in a perfect game with 14.^[58]
• Félix Hernández (SEA):
  • Threw the23rd perfect game in Major League history, defeating theTampa Bay Rays 1–0 on August 15. This was the first perfect game in the Mariners' history, and the franchise's fourth no-hitter. It also marked the first time in Major League history three perfect games were thrown in one season. Safeco Field became the first Major League ballpark to host two perfect games in the same season. This would be the last perfect game in the major leagues until 2023.

^[59]

• Jered Weaver (LAA):
  • Threw the 10th no-hitter in Angels history by defeating theMinnesota Twins 9–0 on May 2. This was Weaver's first career no-hitter. Weaver allowed apassed ball onChris Parmelee and awalk onJosh Willingham while striking out nine.^[60]
• Johan Santana (NYM):
  • Threw the first no-hitter in Mets history by defeating theSt. Louis Cardinals 8–0 on June 1. This was Santana's first career no-hitter. He walked five batters while striking out eight. With the Mets' first no-hitter (in their 8,020th game)^[61] This was also the first no-hitter to be thrown against a defending World Series champion since theOakland Athletics in their1990 pennant season.^[62][63]
• Kevin Millwood/Charlie Furbush/Stephen Pryor/Lucas Luetge/Brandon League/Tom Wilhelmsen (SEA):
  • Threw the third no-hitter in Mariners history by defeating theLos Angeles Dodgers 1–0 on June 8. Each pitcher earned their first career no-hitter except for Millwood, who pitched his second. The Mariners pitching staff combined for three walks and nine strikeouts. The combined no-hitter was the first since theHouston Astros used six pitchers against theNew York Yankees in 2003, also ininterleague play. The Mariners tied the all-time league record of the former for the most pitchers used in a no-hitter, while recording a newAmerican League record previously set by Oakland in 1975 and Baltimore in 1991.^[64]
• Homer Bailey (CIN):
  • Threw the 15th no-hitter in Reds history by defeating thePittsburgh Pirates 1–0 on September 28. This was Bailey's first career no-hitter. Only two men reached base,Clint Barmes on a fielding error byScott Rolen in the third and a walk byAndrew McCutchen in the seventh.Todd Frazier's sacrifice fly, scoringBrandon Phillips in the first was the lone run of the game. Bailey struck out ten during his 115 pitch effort. Bailey's effort tied the modern era record for most no-hitters in a season, matching only the 1990 and 1991 seasons with seven no-hitters.^[65]

• Edwin Jackson (WSH):
  • Became the first pitcher since 1900 to record a win as a starter for seven different teams before turning 29 years old by defeating theCincinnati Reds on April 14.^[66]
• Jamie Moyer (COL):
  • With his victory against theSan Diego Padres on April 17, Moyer became the oldest pitcher (49 years, 151 days) in Major League history to win a game.^[67] He broke the record that was held byJack Quinn (49 years, 70 days) who set the record on September 13, 1932, for theBrooklyn Dodgers.
• R. A. Dickey (NYM):
  • Set the Mets' franchise record for most consecutive scoreless innings at32+2⁄3 breaking the record that was held byJerry Koosman. Koosman set the record at31+2⁄3 innings in 1973.^[68] He finished with44+2⁄3 innings without allowing an earned run whenMark Teixeira's sacrifice fly ended the streak on June 24 against theNew York Yankees.^[69]
  • Became the first pitcher in modern Major League history (since 1900) to throw back-to-back complete games while striking out 10-or-more batters and allowing either one hit or no hits in each game.^[70]
• Steve Delabar (TOR):
  • Became the first pitcher in Major League history to record four strikeouts in an extra inning in one game on August 13 against theChicago White Sox.^[22]
• Milwaukee Brewers:
  • Became the first pitching staff in Major League history to record 10 or more strikeouts in seven straight games in modern-day (since 1900) history. They broke the record (six games) that was previously held by the 1990New York Mets, the 2006Chicago Cubs and 2008Cubs.^[71]
• Félix Hernández (SEA):
  • With his 1–0 shutout on August 27 against theMinnesota Twins, this was his third 1–0 shutout for the month, tying the Major League record for most 1–0 shutouts in a calendar month. He tied the record that is held byCarl Hubbell (July 1933) andDick Rudolph (August 1916).^[72]
• Zack Greinke (LAA):
  • Became the first pitcher since 1900 to strike out 13-or-more batters while pitching five-or-fewer innings in a game on September 25 against theSeattle Mariners.^[73]
• Zack Greinke/Garrett Richards/Scott Downs/Kevin Jepsen/Ernesto Frieri (LAA):
  • Became the fourth team to achieve 20 strike outs in a nine inning game on September 25 against theSeattle Mariners. They are the first to do it with multiple pitchers, as it was previously done twice byRoger Clemens and once byKerry Wood.^[74]
• Doug Fister (DET):
  • Set an American League record by striking out nine consecutive batters in his start against theKansas City Royals on September 27. The previous record of eight was previously done on multiple occasions (byNolan Ryan twice,Ron Davis,Roger Clemens, andBlake Stein).^[75]
• David Price (TB):
  • With his victory on September 30 against theChicago White Sox, Price became the first 20-game winner in franchise history. He finished the season with a 20–5 record.^[76]
• Kris Medlen (ATL):
  • With the Braves victory on September 30 against theNew York Mets, the Braves won for a Major League record 23rd straight time in games started by Medlen. This broke the record that was held byWhitey Ford andCarl Hubbell.^[77]
• Fernando Rodney (TB):
  • Set the Major League record for the lowest ERA with at least 50 appearances at 0.60. Rodney broke the record of 0.61 that was set byDennis Eckersley in 1990.^[78]

• Toronto Blue Jays/Cleveland Indians:
  • Played the longest opening-day game ever in the major leagues on April 5. The game lasted 16 innings^[79] and the Blue Jays won 7–4. The game eclipsed the previous longest openers between Cleveland and Detroit on April 19, 1960 (15 innings), and between Philadelphia and Washington on April 13, 1926 (15 innings).
• Cincinnati Reds:
  • Became the sixth franchise to reach 10,000 wins in Major League history with a 9–4 win against theChicago Cubs on April 20.^[80] The Reds amassed a record of 10,000–9,710.
• Kansas City Royals:
  • With their loss to theToronto Blue Jays on April 23, the Royals lost all ten games on their homestand. Only two other teams in Major League history went 0–10 or worse on a homestand: theSeattle Pilots went 0–10 on a homestand in August 1969, and theArizona Diamondbacks went 0–11 on a homestand in July 2004.^[81]
• Baltimore Orioles:
  • Became the first team in American League history to start a game with three consecutive home runs by doing this against theTexas Rangers on May 10 in the first game of the doubleheader.^[82]Ryan Flaherty,J. J. Hardy andNick Markakis hit the record setting home runs againstColby Lewis.
  • With their victory on September 13 against theTampa Bay Rays, the Orioles won their 81st game of the season which officially ended a franchise-record run of 14 consecutive losing seasons.^[83]
  • Chris Davis became the first position player to be credited with a win sinceRocky Colavito pitched in 1968. The May 6 game was also notable in that both teams used a position player to pitch in relief, the first time since 1925.^[84]
• Los Angeles Dodgers:
  • By being shutout in the three-game series against theSan Francisco Giants June 25 through June 27, this marked the first time in franchise history that the Dodgers failed to score in a series of three or more games.^[45]
• New York Yankees:
  • Set a franchise record by scoring at least three runs in their 39th consecutive game on July 15 against theLos Angeles Angels. This broke a team record set in 1933. Only two other Major League teams have scored three runs or more in each of at least 39 straight games in one season: the 1994Indians (48 games) and 1930Athletics (41).^[85] The streak ended at 43 games after a 3–2 loss to theOakland Athletics on July 20.
• St. Louis Cardinals:
  • Tied a Major League record sevendoubles in one inning in the seventh inning against theChicago Cubs on July 21. They tied the mark set by theBoston Bees in 1936. The 12 runs they scored in the inning also tied a franchise record set by the1926 Cardinals.^[86]
• Washington Nationals:
  • Became the third team in Major League history to hit at least six home runs in consecutive games on September 4 and 5 against theChicago Cubs, joining the 2003Los Angeles Angels and the 1996Los Angeles Dodgers.^[87]
• Chicago Cubs/Houston Astros:
  • On September 11, 2012, the Cubs and Astros combined to use 11 pitchers in a game in which Houston came away with a 1–0 victory atMinute Maid Park. It is the most pitchers used in a 1–0 nine-inning game in Major League history breaking the record of ten pitchers in games of that type:Colorado vs.San Diego on September 17, 2008,San Francisco vs. San Diego on September 10, 2010, and thePittsburgh vs. Houston on June 14, 2011.^[88]
• Oakland Athletics:
  • Set the American League record for most team strikeouts in a season by passing the record of 1,324 strikeouts that theTampa Bay Rays set in 2007.Chris Carter was the victim as theRangers right-handed pitcherRoy Oswalt struck out Carter in the third inning on September 26.^[89] The Major League record is 1,529 strikeouts and is currently held by the 2010Arizona Diamondbacks.^[90]
  • Set the Major League record for wins by rookie pitchers with their 53rd win against theTexas Rangers on October 2.^[91]
• Pittsburgh Pirates:
  • With their loss to theCincinnati Reds on September 30, the Pirates extended their record for most consecutive losing seasons to 20. Their last winning record was in 1992.^[92]
• Division Series:
  • This postseason marks the first time that all four division series went the full five games since the divisional round and wild cards were introduced in 1995.^[93]

• The Sporting News Player of the Year Award:Miguel Cabrera^[94]
• Comeback Players of the Year:Fernando Rodney (TB, American);Buster Posey (SF, National)
• Edgar Martínez Award (Best designated hitter):Billy Butler (KC)
• Hank Aaron Award:Miguel Cabrera (DET, American);Buster Posey (SF, National)
• Roberto Clemente Award (Humanitarian):Clayton Kershaw (LAD)
• Delivery Man of the Year (Best reliever):Fernando Rodney (TB)
• Rolaids Relief Man Award (Best reliever)Jim Johnson (BAL, American),Craig Kimbrel (ATL, National)^[95]
• Warren Spahn Award (Best left-handed pitcher):Gio González (WSH)

Five teams have made wholesale changes to their uniforms in 2012, while a sixth has new road uniforms. Two other teams added alternate uniforms to their existing set.

TheSan Diego Padres were the first team to announce changes to their logos and uniform set on November 9. The new primary features the "SD" cap logo inside a navy circle with the words "San Diego Padres Baseball Club" encircling it. The "swinging friar" logo was also revived, albeit in the current colors. Another secondary logo features the Padres script from last season below the depiction ofPetco Park in sand and above the year of establishment; a blue and white version is used on the away and alternate uniforms. The front of the home uniform remains the same, except that the sand trim in "Padres" is now in trim instead of a drop shadow and the addition of navy piping. Originally they'll use the sand Petco patch on the left sleeve, but upon unveiling the uniforms, the "swinging friar" patch was placed instead. The road uniforms now feature "San Diego" in an arched position with navy piping. The alternate blue uniforms feature the "SD" cap logo on the left chest with white piping. All three uniforms now feature the block numerals on the reverse side. The digital camouflage uniforms were retained, save for the change to block numerals. The caps with the sand "SD" were retired.^[126]

The Marlins unveiled their changes on November 11, 2011, as the team was rebranded as theMiami Marlins,^[127] complete with a new logo featuring a stylized Marlin jumping over anart deco colored "M" in coral, yellow and blue. "MIAMI" will grace the primary white uniform, and there will be an orange home alternate which feature the team name, while the black alt had been reduced to road alternate jersey. The black cap is used for the regular home, away and black alternates, while the orange cap is paired with the orange alternates. The Marlins become the second team to use the city (or state) name on the home uniforms, after theTexas Rangers.

November 15 saw theBaltimore Orioles redesign their road and home uniform sets and returned to a version of the cartoon logo used from the mid-1960s to 1988.^[128] The home caps are white in front and black on the back with an orange bill, while the away caps will be all black with an orange bill, both featuring the cartoon bird. They also unveiled a modernized version of the orange alternate uniforms last worn in 1992, and were worn on select home games, but retained the black alternate uniforms paired with the black and orange cap with the "O's" script.^[129]

As part of their golden anniversary season, theNew York Mets modified their home and road uniforms to resemble the style worn in 1962, having their unveiling November 16.^[130] The black drop-shadow trim was removed from the team/city script logos, player numerals and name lettering on the off-white pinstriped home uniforms (now the primary home uniform), the white alternate home uniforms, and the grey road uniforms, all of which were worn only with the team's traditional blue cap with orange "NY" crest and blue undersleeves, belts and socks. In addition, the black alternate jersey (which will be worn occasionally on the road in 2012) is being phased out, to be replaced by a blue alternate starting in 2013. The solid black cap with the blue/white/orange crest will also be retained for one more season, to be worn only with the black alternate jersey. The black cap with blue bill and blue/orange crest has been eliminated. In addition, the Mets have removed the color black from their batting-practice jerseys and caps; both will be blue with orange lettering/logos outlined in white.

TheToronto Blue Jays unveiled new uniforms on November 18, returning to a variation of their vintage logo used from 1977 through 1996.^[131] The new logo is similar to the original used from 1977–96, with a few exceptions: a more prominentmaple leaf, a sleeker-lookingblue jay,serifed modern lettering on the team name, and a split-line blue circle enclosing the logo. The new uniforms are similarly based on the set used from 1989–96; a white home uniform with "Blue Jays", a grey road uniform with "Toronto", and a blue alternate uniform with "Blue Jays". The team/city name is arched above the secondary logo of the blue jay with the maple leaf, sans the baseball, situated on the left side. The secondary logo is also placed in the blue cap. The uniforms use the breathable double-knit polyester fabric, claiming the previously lighter Climate Base fabric became too heavy, once players began to sweat.^[132]

TheColorado Rockies replaced their purple road pinstripes with a more traditional solid gray uniform which was unveiled at RockiesFest in Denver in January 2012.

TheSan Francisco Giants andAtlanta Braves added alternate uniforms to their set. The Giants wear a Sunday road game grey alternate based on the road uniforms they wore during their1989 World Series run, with the interlocking 'SF' logo on the left chest and black neck-hoop piping. The black piping was also incorporated into the team's normal road gray uniforms. The Braves unveiled a cream (heritage white) home alternates based on the uniforms worn in theirfirst season in Atlanta. The uniform has the 'Braves' wordmark without thetomahawk with the uniform number below on the left chest and navy piping. The sleeves have a logo commemorating the Braves franchise's first season in 1876.

A new, slightly alteredLos Angeles Dodgers logo made its way to the Dodgers dugout wall atDodger Stadium and for their "Social September" promotion in September 2011.^[133] The baseball and flight lines have been thickened, while the "o" in the script "Dodgers" no longer has a line on the bottom left. The home uniform script continues to use the previous script, though.

After reviving the popular Northwest Green jerseys at home, theSeattle Mariners are bringing back their navy with teal bill caps, last worn in 2002, for Monday and Friday home contests. Also, their navy road alternate will now have "SEATTLE" on the jersey front.^[134]

The Royals unveiled minor tweaks to their light blue home alternate jersey, with all numbers and lettering now white with royal trim, and a revamped away uniform (changed to a darker blue-gray color and a revamped "Kansas City" script). In addition, the team has dropped their light blue caps.^[135]

TheCleveland Indians made minor tweaks to the home and alternate uniforms. The white home uniform features navy collar piping and the 'Indians' script in red and navy trim, removing the white inner trim as well as the navy piping on the button lines. The navy alternate features gray collar piping and the 'Indians' script in red and white trim, removing the navy inner trim as well as the grey piping on the button lines.^[136]

TheLos Angeles Angels of Anaheim revert to the silver halo after changing it to gold the previous year. They also added a sleeve patch that says 'Angels Baseball' with the foundation year (1961) separated by the current logo in between. The logo is wrapped in a red, navy and silver circle. This patch will be placed on all uniforms.

As part of their 40th anniversary inArlington, theTexas Rangers will wear replicas of the four different uniforms they've worn throughout the team's history, the most notable of which are the two uniforms worn during the ownership of then-futurePresident of the United StatesGeorge W. Bush.

As part of their 50th anniversary, the Astros will wear throwbacks throughout the season, including a game withColt .45s uniforms.

TheRed Sox and the Yankees wore 1912 throwbacks on April 20 to mark the 100th anniversary ofFenway Park. It marked only the second time the Yankees have worn throwbacks; the first was in 1996, when they woreNew York Black Yankees uniforms at a Negro leagues tribute game in Detroit.

The Red Sox and Athletics wore 1936 uniforms on May 2 at Fenway Park.

The Twins woreMinneapolis Millers uniforms on June 30 in the second game of a make-up doubleheader against the Royals, who wore the uniforms of theKansas City Blues.

The Nationals wore the uniforms of the 1924Washington Senators on July 5 against the Giants, who wore the 1924 New York Giants uniforms.

The Athletics wore the PCLOakland Oaks uniforms, and the Mariners theRainiers, on July 8.

The Brewers will wearMilwaukee Bears Negro leagues uniforms on July 28.

The Diamondbacks will wear a throwback uniform on September 15. Fans decided online that their 1998 purple uniform will be worn.

The White Sox are wearing 1972 uniforms on Sundays at home this season.

TheDetroit Tigers andPittsburgh Pirates wore throwback uniforms paying tribute to theNegro league baseball teamsDetroit Stars andPittsburgh Crawfords on May 19.

TheLos Angeles Angels of Anaheim andSeattle Mariners wore throwback uniforms of defunctPacific Coast League teamsLos Angeles Angels andSeattle Rainiers on May 26.

TheChicago Cubs andSan Francisco Giants wore 1912 throwback uniforms on June 2.

The Pirates and Royals wore Negro leagues uniforms on June 9 – the Pirates, theHomestead Grays and the Royals, theKansas City Monarchs.

TheTampa Bay Rays wore 'faux-back' 1979 throwback jerseys on June 30 against the Tigers, who also wore throwback jerseys from the same year. Due to the fact the Rays did not exist as a franchise in 1979, their uniform design was inspired from popular uniform styles such as pullovers and two-tone caps.^[137]

The San Diego Padres and New York Mets wore 1989 throwback uniforms on August 3.

The St. Louis Cardinals and Milwaukee Brewers celebrated the 30th anniversary of the1982 World Series by wearing throwback uniforms on August 4. The Cardinals also added a 30th anniversary patch commemorating their World Series victory, exclusive to their throwback uniforms.^[138] The next night, the Cardinals wore their road blue uniforms against the Brewers.^[139]

TheCincinnati Reds andPhiladelphia Phillies wore throwback uniforms from the 1991 season on August 22. Ironically, on June 16, 1991, the Reds and Phillies had worn 1957 uniforms atVeterans Stadium. The Reds won both games.

The Cardinals wore special uniforms to commemorate their2011 World Series win on April 13–14. The 'STL' on the caps was gold with navy trim, while the word 'Cardinals' and the block numbers on the uniforms were gold with navy trim. The Cardinals wore them during the unfurling of their championship flag on April 13, and the presentation of theCommissioner's Trophy andWorld Series rings on April 14.

MLB players wore No. 42 on April 15, the 65th anniversary ofJackie Robinson's MLB debut. The Dodgers wore a Brooklyn-era cap and batting helmet that day, as well.

The Pirates and Orioles donned camouflage uniforms duringMemorial Day weekend.

The Brewers wore an Italian-language batting practice uniform with the word "Birrai" on July 1; their opponents Arizona Diamondbacks ('I D-Backs') also wore Italian-language uniforms. They also wore the Cerveceros uniforms on June 2 against the Pirates ('Piratas').

Players wore special caps on Memorial Day andIndependence Day; the Blue Jays also wore special caps onCanada Day, along with a specialized red uniform. This year, acamouflage design was used in lieu of theAmerican andCanadian flags.

In commemoration of theSeptember 11 attacks, all American teams wore caps with the American flag sewn on the left; the Blue Jays sported both the American and Canadian flags on both sides of their caps.

As part ofCinco de Mayo theSan Francisco Giants ("Gigantes") andHouston Astros ("Los Astros") wore Spanish-language home uniforms for the game.

On July 6, theNew York Mets ("Los Mets") wore blue Spanish-language jerseys for the game against theChicago Cubs. They wore the uniforms again on August 24 against the Astros.

TheChicago White Sox wore a variation of their home uniforms on September 7 against the Royals, as part of the "Halfway toSt. Patty's" promotion. The uniform substitutes the traditional black color for green.

The Athletics and Diamondbacks wore Spanish-language uniforms in celebration ofMexican Independence Day on September 16, against the Orioles and Giants, respectively. The A's used their primary home uniform, with "Atléticos" substituting for "Athletics", while the D-Backs used their black alternate uniform, with "Los D-Backs" substituting for the secondary "A" logo.

The following teams will wear commemorative patches for special occasions:

• TheNew York Mets wore a patch honoringGary Carter, who died of brain cancer on February 16, 2012. The patch features a black inverted home plate with Carter's number 8 and "KID" inscribed on it.^[140]
• TheChicago White Sox sported two black diamond patches on the right sleeve in honor ofBill Skowron (BMS) andKevin Hickey (HIC MAN). Skowron died on April 27 of heart failure following a long battle with lung cancer, while Hickey died on May 16 of undisclosed causes.
• The Major Leagueumpires wore black patches honoring former umpiresMarty Springstead (MS), who died January 17, 2012, andHarry Wendelstedt (HW), who died March 9, 2012.
• TheSan Diego Padres added a black circle patch with the number 48 in honor of the passing of bullpen coachDarrel Akerfelds on June 24.
• TheBoston Red Sox added a black circle patch with the number 6 in honor of legendJohnny Pesky, who died on August 13. The patch only applies to their home and alternate uniforms; the road uniforms were fitted with a black armband. On August 21, against the Angels, all Red Sox players and coaches wore No. 6 in Pesky's memory, similar to the approach of all players and coaches wearing No. 42 duringJackie Robinson Day. The Angels also wore the same black patch in Pesky's memory for the game, even though Pesky never worked for the Angels.
• TheOakland Athletics added a black circle patch with the initials "GJN" for pitcherPat Neshek's day-old son, Gehrig John, who died right before the playoffs.
• AtComerica Park, underneath the American flag on the outfield flagpole, theDetroit Tigers flew a plain white flag with the initials CJ in the center. This was in memory of Charles P. Jones, the team's vice president, who died on August 13.

The Florida Marlins vacatedSun Life Stadium at the end of the 2011 season and moved intoMarlins Park, which was built on the site of the oldOrange Bowl stadium. The team officially adopted its new name ofMiami Marlins on November 11, 2011.

The 2012 season marked the 100th anniversary of the opening ofBoston'sFenway Park. In addition,Dodger Stadium—home of theLos Angeles Dodgers—celebrated its 50th anniversary, and theBaltimore Orioles home,Oriole Park at Camden Yards, also celebrated its 20th anniversary.

The 2012 season also marked the 50th anniversary for theNew York Mets and theHouston Astros, but the 51st season for both teams.

The Mets began play four years after theBrooklyn Dodgers andNew York Giantsmoved west in 1958, leaving New York City with only one MLB team in theYankees. In 1959, New York City attorneyWilliam Shea, with support from baseball figures including former Dodgers executiveBranch Rickey, proposed a third major league called theContinental League. Houston and New York City were both among the announced CL cities. MLB responded to the threat by placing new franchises in several of these cities, and offered a National League franchise to the owners of the proposed New York CL team, who accepted. With Shea's goal of bringing a second major-league team to New York successful, he abandoned the new league, which officially folded in 1960 without ever playing a game. The Mets began play in 1962 at the Giants' former home of thePolo Grounds inManhattan, moved in 1964 toShea Stadium (named after the aforementioned William Shea) inQueens, and opened their current home ofCiti Field, adjacent to the former Shea Stadium site, in 2009.

The Astros were also enfranchised as a direct response to the plans to launch the CL. They began play in 1962 as the Houston Colt .45s; following a dispute withColt Firearms over revenues from souvenir sales and licensing fees, the team moved to theAstrodome in 1965 and renamed itself the Astros. In 2000, they opened their current home, now known asMinute Maid Park. In honor of the Astros' 50th anniversary, they donned different throwback uniforms at home on Friday night themed to each decade.

Major League Baseball enters the 6th year of seven-year contracts it signed with its broadcast partners prior to the 2007 season. This year,Fox will televise the Saturday Game of the Week (which will be shown in prime time each week from May 19 to July 7), the All-Star Game, the National League Championship Series, and the World Series.TBS will show a Sunday Game of the Week, the All-Star Selection Show, all but two Division Series games, the American League Championship Series, and the new wild card elimination games.ESPN will show games onSunday,Monday, andWednesday nights (with Monday and Wednesday Night Baseball airing onESPN2 during April, May and early June due to ESPN's priority to theNBA regular season and playoff coverage, and then Monday Night Baseball moving to form either a Wednesday night doubleheader or a simultaneous airing of a Monday Night game on ESPN and a Wednesday Night game on ESPN2 when the NFL season starts, to accommodateMonday Night Football), and the All-StarHome Run Derby. They will also air 10spring training games, as well as five nationally televised games onOpening Week from April 4–6. TheMLB Network will air a nationalGame of the Week broadcast every Thursday and the two Division Series games not shown on TBS.Major League Baseball International will air insyndication the All-Star Game, the ALCS, and the World Series to global markets.

The Padres switched fromCox Cable-owned4SD to a new channel calledFox Sports San Diego, which the Padres also have a minority stake in.^[141]

This is the last season ofHouston Astros games onFox Sports Houston andKTXH. Starting next season, all games will be onComcast SportsNet Houston, a new channel the Astros will co-own with theHouston Rockets.^[142]

TheMid-Atlantic Sports Network (MASN), which broadcasts Orioles and Nationals games, became the latest network to adjust its score box to the16:9aspect ratio forhigh-definition television broadcasts. The adjustment, which began with Fox Sports' MLB coverage in 2010, was later adopted to other networks, notably ESPN, TBS,Fox Sports Net (exceptFox Sports South and someterrestrial television broadcasts produced by Fox Sports), andRoot Sports during the 2011 season. As of this season, only theYES Network,New England Sports Network,Comcast SportsNet,SportsNet New York andSportsTime Ohio have yet to move to the newly adjusted high definition broadcast.

• On March 27, 2012, the Dodgers were sold toGuggenheim Baseball Management LLC, a group that includedNBA legendMagic Johnson^[143] for $2.1 billion. The new management team, to include baseball executiveStan Kasten, still had to await approval by two different courts—one handling the Dodgers' bankruptcy, and the other overseeing the divorce of former ownersFrank andJamie McCourt.^[144] The sale was finalized on May 1, at which time the new management team officially took over.^[145]
• The San Diego Padres were sold to a group headed byRon Fowler, golferPhil Mickelson andPeter O'Malley, the former owner of the Dodgers for US $800 million in August.^[146]

• Atlanta Braves third basemanChipper Jones announced on March 22, 2012, that he will retire after 19 seasons at the conclusion of the 2012 season.^[147]
• CatcherIván Rodríguez officially announced his retirement on April 23, 2012. Playing for six different teams in a 21-year career, most notably with theTexas Rangers, Rodríguez set a record for mostGold Glove Awards at catcher with 13, while earningAL MVP honors in 1999 and a2003 World Series title with theFlorida Marlins. He also appeared in 14 All-Star Games and won sevenSilver Slugger Awards at catcher, while appearing in 2,543 games behind the plate, a Major League record.^[148]
• PitcherKerry Wood of theChicago Cubs announced his retirement on May 18, 2012.^[149]
• Detroit Tigers outfielderMagglio Ordóñez retired from baseball on June 3, 2012.^[150]
• ShortstopOmar Vizquel stated on June 26 that he plans to retire at the end of the season after a 24-year career.^[151]
• PitcherDontrelle Willis announced his retirement on July 2.^[152]
• OutfielderJay Gibbons announced his retirement on July 9.^[153]
• PitcherBen Sheets announced his retirement on October 2 that he will start theAtlanta Braves regular-season finale on October 3 and then will retire after the start.^[154]

• TheSt. Louis Cardinals retired former managerTony La Russa's No. 10 prior to the May 11 game against theAtlanta Braves. La Russa served as manager from 1996–2011 and managed in three World Series for the Cardinals, winning in2006 and2011.^[155]
• TheAtlanta Braves retiredJohn Smoltz's No. 29 and inducted him into the Atlanta Braves Hall of Fame prior to the June 8 game against theToronto Blue Jays. Smoltz retired with a career record of 213–155 with a 3.33 ERA and 3,084 strikeouts. He also added 154 saves and was 15–4 in the post-season.^[156]
• TheCincinnati Reds retiredBarry Larkin's No. 11 prior to the August 25 game against the St Louis Cardinals atGreat American Ball Park. Larkin playedshortstop for his hometown from 1986 to 2004 and was one of the pivotal players on the1990 Reds' World Series championship team. Larkin was elected to theNational Baseball Hall of Fame in January 2012 and was inducted on July 22. Larkin is considered one of the top players of his era, winning nine Silver Slugger awards and three Gold Glove awards. He was selected to the Major League All-Star Game twelve times, and was elected the 1995 National League MVP.^[157]
• TheMinnesota Twins retired former managerTom Kelly's No. 10 prior to the September 8 game against the Cleveland Indians atTarget Field. Kelly served as manager from 1986–2001, and led the Twins to their onlyWorld Series victories in1987 and1991.^[158]

• 2012 Korea Professional Baseball season
• 2012 Nippon Professional Baseball season

Wikimedia Commons has media related to2012 in Major League Baseball.

• 2012 Major League Baseball season Official Site
• 2012 Major League Baseball season at ESPN
• 2012 Major League Baseball season schedule atBaseball Reference

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