Batting average (baseball)

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Reggie Jackson batting at Yankee Stadium in 1979; Jackson batted .297 that season. Reggie Jackson bats at Yankee Stadium.jpg
Reggie Jackson batting at Yankee Stadium in 1979; Jackson batted .297 that season.

In baseball, batting average (BA) is determined by dividing a player's hits by their total at-bats. It is usually rounded to three decimal places and read without the decimal: A player with a batting average of .300 is "batting three-hundred". If necessary to break ties, batting averages could be taken beyond the .001 measurement. In this context, .001 is considered a "point", such that a .235 batter is 5 points higher than a .230 batter.



Henry Chadwick, an English statistician raised on cricket, was an influential figure in the early history of baseball. [1] In the late 19th century he adapted the concept behind the cricket batting average to devise a similar statistic for baseball. Rather than simply copy cricket's formulation of runs scored divided by outs, he realized that hits divided by at bats would provide a better measure of individual batting ability. This is because while in cricket, scoring runs is almost entirely dependent on one's batting skill, in baseball it is largely dependent on having other good hitters on one's team. Chadwick noted that hits are independent of teammates' skills, so he used this as the basis for the baseball batting average. His reason for using at bats rather than outs is less obvious, but it leads to the intuitive idea of the batting average being a percentage reflecting how often a batter gets on base, whereas hits divided by outs are not as simple to interpret in real terms.


Ted Williams is the most recent MLB player to hit .400 or better in a season (1941). 1939 Ted Williams.png
Ted Williams is the most recent MLB player to hit .400 or better in a season (1941).
Ty Cobb has the highest MLB career batting average (.366). Ty Cobb 1916-restore.jpeg
Ty Cobb has the highest MLB career batting average (.366).

In modern times, a season batting average of .300 or higher is considered to be excellent, and an average higher than .400 a nearly unachievable goal. The last Major League Baseball (MLB) player to do so, with enough plate appearances to qualify for the batting championship, was Ted Williams of the Boston Red Sox, who hit .406 in 1941. [2] Note that batting averages are rounded; [3] entering the final day of the 1941 season, Williams was at 179-for-448, which is .39955 and would have been recorded as .400 via rounding. [4] However, Williams played in both games of a doubleheader, went 6-for-8, and ended the season 185-for-456, [5] which is .40570 and becomes .406 when rounded. [4]

Since 1941, the highest single-season average has been .394 by Tony Gwynn of the San Diego Padres in 1994. [2] Wade Boggs hit .401 over a 162-game span with Boston from June 9, 1985, to June 6, 1986, [6] but never hit above .368 for an MLB season. [7] There have been numerous attempts to explain the disappearance of the .400 hitter, with one of the more rigorous discussions of this question appearing in Stephen Jay Gould's 1996 book Full House .

Ty Cobb holds the record for highest career batting average with .366, eight points higher than Rogers Hornsby who has the second-highest career average at .358. [8] The record for lowest career batting average for a player with more than 2,500 at-bats belongs to Bill Bergen, a catcher who played from 1901 to 1911 and recorded a .170 average in 3,028 career at-bats. [9] Hugh Duffy, who played from 1888 to 1906, is credited with the highest single-season batting average, having hit .440 in 1894. [10] The modern-era (post-1900) record for highest batting average for a season is held by Nap Lajoie, who hit .426 in 1901, [10] the first year of play for the American League. The modern-era record for lowest batting average for a player that qualified for the batting title is held by Chris Davis, who hit .168 in 2018. [11] While finishing six plate appearances short of qualifying for the batting title, Adam Dunn of the Chicago White Sox hit .159 for the 2011 season, nine points lower than the record. [12] The highest batting average for a rookie was .408 in 1911 by Shoeless Joe Jackson. [13]

The league batting average in MLB for the 2018 season was .248, with the highest modern-era MLB average being .296 in 1930, and the lowest being .237 in 1968. [14] For non-pitchers, a batting average below .230 is often considered poor, and one below .200 is usually unacceptable. This latter level is sometimes referred to as "The Mendoza Line", named for Mario Mendoza — a lifetime .215 hitter but a good defensive shortstop. [15]

Sabermetrics, the study of baseball statistics, considers batting average a weak measure of performance because it does not correlate as well as other measures to runs scored, thereby causing it to have little predictive value. Batting average does not take into account bases on balls (walks) or power, whereas other statistics such as on-base percentage and slugging percentage have been specifically designed to measure such concepts. Adding these statistics together form a player's on-base plus slugging or "OPS". This is commonly seen as a much better, though not perfect, indicator of a player's overall batting ability as it is a measure of hitting for average, hitting for power, and drawing walks.


In 1887, bases on balls were counted as hits by the major leagues in existence at the time. This inflated batting averages, with 11 players batting .400 or better, and the experiment was abandoned the following season. Historical statistics for the season were later revised, such that "Bases on balls shall always be treated as neither a time at bat nor a hit for the batter." [16]

In rare instances, MLB players have concluded their careers with a perfect batting average of 1.000. John Paciorek had three hits in all three of his turns at bat. [17] Esteban Yan went two-for-two, including a home run. Hal Deviney's two hits in his only plate appearances included a triple, while Steve Biras, Mike Hopkins, Chet Kehn, Jason Roach and Fred Schemanske also went two-for-two. A few dozen others have hit safely in their only career at-bat.

Qualifications for the batting title

The MLB batting averages championships (often referred to as "the batting title") are awarded annually to the player in each league who has the highest batting average. Ty Cobb holds the MLB and American League (AL) record for most batting titles, officially winning 11 in his career. [18] The National League (NL) record of eight batting titles is shared by Honus Wagner and Tony Gwynn. Most of Cobb's career and all of Wagner's career took place in what is known as the Dead-Ball Era, which was characterized by higher batting averages by star players (although the overall league batting average was historically at its lowest during that era) and much less power, whereas Gwynn's career took place in the Live-Ball Era.

To determine which players are eligible to win the batting title, the following conditions have been used over the sport's history: [19]

From 1967 to the present, if the player with the highest average in a league fails to meet the minimum plate-appearance requirement, the remaining at-bats until qualification (e.g., five at-bats, if the player finished the season with 497 plate appearances) are hypothetically considered hitless at-bats; if his recalculated batting average still tops the league, he is awarded the title. This is officially Rule 10.22(a), but it is also known as the Tony Gwynn rule because the Padres' player won the batting crown in 1996 with a .353 average on just 498 plate appearances (i.e., he was four short). Gwynn was awarded the title since he would have led the league even if he'd gone 0-for-4 in those missing plate appearances. His average would have dropped to .349, five points better than second-place Ellis Burks' .344. [20] In 2012, a one-time amendment to the rule was made to disqualify Melky Cabrera from the title. Cabrera requested that he be disqualified after serving a suspension that season for a positive testosterone test. He had batted .346 with 501 plate appearances, and the original rule would have awarded him the title over San Francisco Giants teammate Buster Posey, who won batting .336. [21] [22]

All-time leaders

Major League Baseball

Different sources of baseball records present somewhat differing lists of career batting average leaders. There is consensus that Ty Cobb leads this category. Further rankings vary by source, primarily due to differences in minimums needed to qualify (number of games played or plate appearances), or differences in early baseball records. includes the Negro League teams considered major leagues by Major League Baseball. [23] The below table presents the top ten lists as they appear in four well-known sources, with the rankings and degree of precision (decimal places) as provided in the source. The main article linked above is sourced from, which is also presented here. None of the players listed below are still living; each is an inductee of the Baseball Hall of Fame, except for Lefty O'Doul, Pete Browning, and Shoeless Joe Jackson (who is ineligible due to his alleged role in the Black Sox Scandal of 1919). [8] Baseball Almanac [24] ESPN [25] [26]
1 Ty Cobb .36621Ty Cobb.366361Ty Cobb.3661Ty Cobb.367
2 Oscar Charleston .36432Rogers Hornsby.358502Rogers Hornsby.3582Rogers Hornsby.358
3 Rogers Hornsby .35853Shoeless Joe Jackson.355753Shoeless Joe Jackson.3563Ed Delahanty.346
4 Shoeless Joe Jackson .35584Ed Delahanty.345904Ed Delahanty.3464Tris Speaker.345
5 Jud Wilson .35195Tris Speaker.344685Tris Speaker.3455Ted Williams.344
6 Lefty O'Doul .34936Ted Williams.344416Billy Hamilton.3446Billy Hamilton.344
7 Turkey Stearnes .34907Billy Hamilton.34429Ted Williams.3447Dan Brouthers.342
8 Ed Delahanty .34588Babe Ruth.342068Dan Brouthers.3428Babe Ruth.342
9 Tris Speaker .34479 Harry Heilmann .34159Harry Heilmann.3429Harry Heilmann.342
10 Billy Hamilton .344410 Pete Browning .34149Babe Ruth.34210 Willie Keeler .341
Ted Williams .3444

Minor League Baseball

The highest recorded single-season batting average in Minor League Baseball is .462, accomplished by Gary Redus in 1978, when he played for the Billings Mustangs, [27] [28] an affiliate of the Cincinnati Reds in the Rookie Advanced-level Pioneer League. Redus was 117-for-253 in 68 games, [29] as the Pioneer League only plays from June to early September. Redus went on to play in MLB from 1982 through 1994, batting .252 during his MLB career. [30]

Nippon Professional Baseball

Nori Aoki is the NPB career batting average leader. Gk ryoDSC 8882.jpg
Nori Aoki is the NPB career batting average leader.

In Nippon Professional Baseball (NPB), the leader in career batting average is Nori Aoki, an active player who has hit .317 in his NPB career, as of August 2022. [31] [ better source needed ] Aoki played in MLB from 2012 to 2017, where he compiled a .285 batting average. [32] Ichiro Suzuki batted .353 in NPB, [33] but does not have enough NPB career at-bats to qualify for that league's title.

See also

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Further reading