Inbaseball, anat bat (AB) ortime at bat is abatter's turn batting against apitcher. An at bat is different from aplate appearance. A batter is credited with a plate appearance regardless of what happens upon completion of his turn at bat, but a batter is charged with an at bat only if that plate appearance does not have one of the results enumerated below. While at bats are used to calculate certainstatistics, includingbatting average andslugging percentage, players can qualify for the season-ending rankings in these categories only if they accumulate 502 plate appearances during the season.
Batters will not be charged an at bat if their plate appearances end under the following circumstances:
In addition, if theinning ends during an at bat (due to the thirdout being made by a runnercaught stealing, for example), no at bat or plate appearance will result because neither were completed.
An at bat is a specific type of plate appearance in which the batter stands at the plate intending to put the ball in play and get on base. This is why at bats, and not plate appearances, are used to calculate batting average, as plate appearances in general can result in many outcomes that do not necessarily involve putting the ball in play, and batting average specifically measures a batter's contact hitting.
Rule 9.02(a)(1) of the official rules ofMajor League Baseball defines an at bat as: "Number of times batted, except that no time at bat shall be charged when a player: (A) hits a sacrifice bunt or sacrifice fly; (B) is awarded first base on four called balls; (C) is hit by a pitched ball; or (D) is awarded first base because of interference or obstruction[.]"[1]
An at bat is counted when:
Pete Rose had 14,053 career at bats, the all-time major league and National League record.[2][3] The American League record is held byCarl Yastrzemski, whose 11,988 career at bats were all in the AL.[4]
The single season record is held byJimmy Rollins, who had 716 at bats in 2007.Willie Wilson,Ichiro Suzuki andJuan Samuel also had more than 700 at bats in a season.[5] 14 players share the single game record of 11 at bats in a single game, all of which wereextra inning games.[6] In games of 9 innings or fewer, the record is 7 at bats and has occurred more than 200 times.[7]
The team record for most at bats in a single season is 5,781 by the1997 Boston Red Sox.[8]
"At bat", "up", "up at bat", and "at the plate" are all phrases describing a batter who is facing the pitcher. Just because a player is described as being "at bat" in this sense, he will not necessarily be given an at bat in his statistics; the phrase actually signifies aplate appearance (assuming it is eventually completed). This ambiguous terminology is usually clarified by context. To refer explicitly to a statistical "at bat", the term "official at bat" is sometimes used.
Official Baseball Rule 5.06(c) provides that "[a] batter has legally completed histime at bat when he is put out or becomes a runner" (emphasis added). The "time at bat" defined in this rule is more commonly referred to as aplate appearance, and the playing rules (Rules 1 through 8) uses the phrase "time at bat" in this sense.[note 2] In contrast, the scoring rules use the phrase "time at bat" to refer to the statisticat bat, defined in Rule 9.02(a)(1), but sometimes uses the phrase "official time at bat" or refers back to Rule 9.02(a)(1) when mentioning the statistic. The phrase "plate appearance" is used in Rules 9.22 and 9.23 dealing with batting titles and hitting streaks, and in Rule 5.10(g) comment regarding the Three-Batter Minimum: "[t]o qualify as one of three consecutive batters, the batter must complete his plate appearance, which ends only when the batter is put out or becomes a runner." The term is not elsewhere defined in the rulebook.[1]
