February 3 – The Hall of Fame's Special Committee on the Negro Leagues picks versatile Cuban starMartín Dihigo and shortstopJohn Henry Lloyd for induction. The committee then dissolves, its functions being taken over by the Veterans Committee.
March 21 –Mark Fidrych, the 1976 AL Rookie of the Year, rips the cartilage in his left knee and will undergo surgery in ten days. The injury will effectively end the fabled career ofThe Bird.
May 14 – Journeyman Kansas City Royals pitcherJim Colbornno-hits the Texas Rangers atRoyals Stadium, striking out six, walking one, and hitting one batter in a 6–0 Royals win. Colborn faces 28 batters, one more than the complete game minimum.
May 30 –Dennis Eckersley of the Cleveland Indians throws the secondno-hitter of the 1977 season, striking out twelve in a 1–0 win over the California Angels atCleveland Municipal Stadium. A first inning walk toTony Solaita is all that prevents Eckersley from throwing the firstperfect game since 1968. The home plate umpire for the game is Bill Deegan, who was also the home plate umpire for Jim Colburn's no-hitter roughly two weeks earlier.
June 18 – In the sixth inning of anNBC-televised game against theBoston Red Sox atFenway Park,New York Yankee managerBilly Martin pulls right fielderReggie Jackson and replaces him withPaul Blair after Jackson misplaysJim Rice's fly ball for a double. As Jackson returns to the dugout, he and Martin exchange words, Martin arguing that Jackson had shown him up by "not hustling" on the play. The Yankee manager lunges at Jackson (who is 18 years younger than Martin and outweighs him by about 40 pounds), and has to be restrained by coachesYogi Berra andElston Howard—with the NBC cameras showing the confrontation to the entire country. The Red Sox win, 10–4.
June 24 – In a 6–5 win over the visiting San Francisco Giants, Houston Astros first basemanBob Watsonhits for the cycle.
June 27 – TheSan Francisco Giants'Willie McCovey smashes two home runs, one agrand slam off relieverJoe Hoerner, in the sixth inning to pace a 14–9 victory over theCincinnati Reds. McCovey becomes the first player in major league history to twice hit two home runs in one inning (his first time was on April 12, 1973), and also becomes the all-time National League leader with 17 career grand slams.Andre Dawson, in both 1978 and 1986, will be the next player to hit two homers in the same inning.
June 29 –Willie Stargell of the Pittsburgh Pirates hits his 400th career home run when he takes St. Louis Cardinals pitcherEric Rasmussen deep for a two-run shot in the fifth inning of a 9–1 Pirates' victory atBusch Stadium.
September 9 – In the second game of a double header inBoston, theDetroit Tigers debut their new second baseman,Lou Whitaker, and their new shortstop,Alan Trammell. They will play side by side for 19 years to establish a new Major League record for tandem play at those positions.
September 10 –Roy Howell hits two home runs, two doubles, and a single, and drives in nine runs, asToronto beats theYankees 19–3.
September 15 –Earl Weaver pulls hisBaltimore Orioles from the field atExhibition Stadium citing "hazardous conditions" caused by a small tarp weighed down by bricks covering the bullpen mound. This results in a forfeiture of the game to theToronto Blue Jays.
September 22 – Texas Rangers pitcherBert Blyleven throws the third and finalno-hitter of the 1977 season, striking out seven and walking one in a 6–0 win over the California Angels atAnaheim Stadium.
September 24 – Second basemanJack Brohamer of the Chicago White Sox becomes the third man of the season tohit for the cycle, accomplishing the feat in an 8–3 win over the Seattle Mariners at theKingdome.
September 25 – California Angels pitcherNolan Ryan notches his 341st strikeout of the season, the fifth highest single season total in American League history. Ryan set the American League single-season record four years earlier when he struck out 383 batters in 1973.
September 30 –Lou Brock of the St. Louis Cardinals steals the 900th base of his career in a 7–2 win over the New York Mets atBusch Stadium, becoming just the second man in baseball history to reach the plateau.
October 18 – New York Yankees right fielderReggie Jackson hits three first-pitch home runs, in consecutive at-bats, during the decisiveGame 6 of the World Series, leading the crowd to serenade him with chants of "Reg-gie! Reg-gie!" after his final home run lands deep in "the black" (center field bleachers). Jackson's historic feat powers the Yankees to an 8–4 win and a four-games-to-two Series victory over the Los Angeles Dodgers. The World Series title is the Yankees' first since 1962 and their 21st overall.
November 22 –Andre Dawson of the Montreal Expos wins the National League Rookie of the Year Award by one vote overSteve Henderson of the New York Mets. Dawson hit .282 with 19 home runs and 65 RBI, while Henderson had .297, 12, 65.
