Plate appearance

Jimmy Rollins holds the single season record for most plate appearances, at 778.

In baseball statistics, a player is credited with a plate appearance (denoted by PA) each time he completes a turn batting. A player completes a turn batting when: he strikes out or is declared out before reaching first base; or he reaches first base safely or is awarded first base (by a base on balls, hit by pitch, or catcher's interference); or he hits a fair ball which causes a preceding runner to be put out for the third out before he himself is put out or reaches first base safely (see also left on base, fielder's choice, force play). In other words, a plate appearance ends when the batter is put out or becomes a runner. A very similar statistic, at bats, counts a subset of plate appearances that end under certain circumstances.

Uses

While at bats are used to calculate such important player hitting statistics as batting averages, slugging percentages and on-base percentages, plate appearances have no such statistical value. However, at season's end. a player must have accumulated 502 plate appearances during a season to be ranked in any of these categories. For example, suppose Player A, with 510 plate appearances and 400 at bats, gets 100 hits during the season and finishes with a .250 batting average. And suppose Player B, with 490 plate appearances and 400 at bats, gets 110 hits during the season and finishes the season with a .275 batting average. Player B, even though he had the same amount of at bats as Player A and even though his batting average is higher, will not be eligible for season-ending rankings because he did not accumulate the required 502 plate appearances, while Player A did and therefore will be eligible.^[1]

Rule 10.22(a)

Rule 10.22(a) of the Official Baseball Rules make a single allowance to the minimum requirement of 502 plate appearances. If a player has less than that minimum amount, but if that player would win the batting, slugging or on-base percentage title if he had that minimum amount, then the amount of at bats he is short may be added to his at bat (and hence plate appearance) total so that he may win that title (assuming that his batting average, which would have to be recalculated after these extra at bats were added, would still be the best in his respective league.) For example, in 2012, Melky Cabrera, then of the San Francisco Giants, finished the season with a league-high .346 batting average, but he had only 501 plate appearances, one short of the required 502. Per the rule, an extra at bat should have been added to his total because, after it is added and his batting average recalculated, he still would have won the batting title. Melky's case, however, turned out differently. The reason Melky finished the season with only 501 at bats was because he was suspended in mid-August when he tested positive for illegal performance-enhancing drugs. Melky was still eligible for that extra plate appearance, but he requested that that extra plate appearance not be added to his total, and that he not be considered for the batting crown, because he admitted that his use of performance-enhancing drugs had given him an unfair advantage over other players. As a result, Melky's name is nowhere to be found on the list of 2012 National League batting leaders.^[2]

Calculating

A batter is not charged with a plate appearance if, while batting, a preceding runner is put out on the basepaths for the third out in a way other than by the batter putting the ball into play (i.e., picked off, caught stealing). In this case, the same batter continues his turn batting in the next inning with no balls or strikes against him.

A batter is not charged with a plate appearance if, while batting, the game ends as the winning run scores from third base on a balk, stolen base, wild pitch or passed ball.

A batter may or may not be charged with a plate appearance (and possibly at-bat) in the rare instance when he is replaced by a pinch hitter after having already started his turn at bat. In this case, the pinch hitter would receive the plate appearance (and potential of an at-bat) unless the original batter is replaced when having 2 strikes against him and the pinch hitter subsequently completes the strikeout. In this case the plate appearance and at-bat are charged to the first batter. (see rule 10.15b)

$PA = AB + BB + HBP + SH + SF + Times Reached on Defensive Interference$

Other uses

In common terminology, the term "at bat" is sometimes used to mean "plate appearance" (for example, "he fouled off the ball to keep the at bat alive"). The intent is usually clear from the context, although the term "official at bat" is sometimes used to explicitly refer to an at bat as distinguished from a plate appearance. However, terms such as turn at bat or time at bat are synonymous with plate appearance.

Scoring

Section 10 of the official rules states that an at bat is not counted when the player:^[3]

hits a sacrifice bunt or sacrifice fly
is awarded first base on four called balls
is hit by a pitched ball
is awarded first base because of interference or obstruction

The main use of the plate appearance statistic is in determining a player's eligibility for leadership in some offensive statistical categories, notably batting average; currently, a player must have 3.1 PAs per game scheduled to qualify for the batting title (for the 162-game schedule, that means 502 PAs).^[3] Also, it is often erroneously cited that total plate appearances is the divisor (i.e., denominator) used in calculating on-base percentage (OBP), an alternative measurement of a player's offensive performance; in reality, the OBP denominator does not include certain PAs, such as times reached via either catcher’s interference or fielder’s obstruction or Sacrifice Hits (Sacrifice Flies are included).

Plate appearances are also used by scorers for "proving" a box score. If the game has been scored correctly, the total number of plate appearances for a team should equal the total of that team's runs, men left on base, and men put out.

Major League Baseball leaders

For career leaders in plate appearances see List of Major League Baseball career plate appearance leaders.

References

↑ Baseball Explained by Phillip Mahony. McFarland Books, 2014. See www.baseballexplained.com
↑ Baseball Explained by Phillip Mahony, McFarland Books 2014. See www.baseballexplained.com
1 2 Official Rules: 10.00 The Official Scorer. MLB.com. Retrieved 22 May 2012.

Baseball concepts

Outline, Glossary

Rules	Rules of baseball Ground rules Infield fly rule Interference

Field	Backstop Baseball diamond Batter's box Batter's eye Bullpen Dugout Foul pole Foul territory Infield On-deck circle Outfield Warning track

Equipment	Ball Bat Batting cage Batting glove Batting helmet Cap Doughnut Glove (defense) Pitching machine Protective cup Shin guard Stirrups Uniform Uniform number

Game process	Batting order Extra innings Innings On-deck Out Positions Run Seventh-inning stretch

Batting	At bat Baltimore chop Bat flip Chinese home run Batting count Bunt Checked swing Cleanup hitter Designated hitter Double Double switch Foul ball Foul tip Golden sombrero Grand slam Ground rule double Hat trick Hit Hit and run Hit by pitch Hitting for the cycle Home run Infield hit Inside-the-park home run Leadoff hitter Lefty-righty switch Line drive Moonshot Plate appearance Platoon system Pull hitter Sacrifice bunt Sacrifice fly Single Slap bunt Strikeout Strike zone Sweet spot Triple Walk Walk-off home run

Pitching	Balk Beanball Breaking ball Brushback pitch Changeup Curveball Eephus Fastball Full count Inside pitching Knuckleball No-hitter Passed ball Perfect game Pitch count Pitchout Quick pitch Screwball Shutout Slider Spitball Strikeout Striking out the side Time of pitch Wild pitch

Base running	Balk Bases loaded Caught stealing Contact play Left on base Obstruction Safe Scoring position Slide Small ball Squeeze play Stolen base Tag up

Fielding	Appeal play Assist Catch Defensive indifference Double play Error Fielder's choice Force play Fourth out Hidden ball trick In-between hop Infield fly rule Infield shift Interference Pickoff Rundown Tag out Triple play Unassisted triple play Uncaught third strike Wall climb Wheel play

Miscellaneous	Bench jockey Bench-clearing brawl Blocking the plate Dead ball Jargon In flight Pepper Scorekeeping Series Shagging Slump Streak (losing) Streak (winning)

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