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In baseball, an at bat (AB) or time at bat is a batter's turn batting against a pitcher. An at bat is different from a plate appearance. A batter is credited with a plate appearance regardless of what happens during his turn at bat. A batter is only credited with an at bat if that plate appearance does not have one of the results enumerated below. While at bats are used to calculate certain statistics, including batting average and slugging percentage, a player can only qualify for the season-ending rankings in these categories if he accumulates 502 plate appearances during the season. A batter will not receive credit for an at bat if their plate appearance ends under the following circumstances: * He receives a base on balls (BB).〔In 1887, Major League Baseball counted bases on balls as hits. The result was high batting averages, including some near .500, and the experiment was abandoned the following season.〕 * He is hit by a pitch (HBP). * He hits a sacrifice fly or a sacrifice hit (also known as sacrifice bunt). * He is awarded first base due to interference or obstruction, usually by the catcher. * The inning ends while he is still at bat (due to the third out being made by a runner caught stealing, for example). In this case, the batter will come to bat again in the next inning, though the count will be reset to no balls and no strikes. * He is replaced by another hitter before his at bat is completed (unless he is replaced with two strikes and his replacement completes a strikeout). Section 10.02.a.1 of the official rules of Major League Baseball defines an at bat as: "Number of times batted, except that no time at bat shall be charged when a player: (1) hits a sacrifice bunt or sacrifice fly; (2) is awarded first base on four called balls; (3) is hit by a pitched ball; or (4) is awarded first base because of interference or obstruction..." ==Examples== An at bat is counted when: *The batter reaches first base on a hit *The batter reaches first base on an error *The batter is called out for any reason other than as part of a sacrifice *There is a fielder's choice 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「at bat」の詳細全文を読む スポンサード リンク
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