List of Major League Baseball annual wins leaders

recognizes the player or players in each league with the most wins each season. In baseball, wins are a statistic used to evaluate pitchers. Credit for a win is given by the official scorer to the pitcher whose team takes and maintains the lead while he is the pitcher of record. If a game is tied or if the lead changes to the other team, all pitchers who have participated and exited the game to that point are unable to receive credit for the victory. A starting pitcher is ineligible for the win if he has not completed five or more innings of the game; instead, the scorer would award the victory to the relief pitcher who was "most effective... in the official scorer's judgment".

History

The National League's first win champion was Albert Spalding, who led the senior circuit with 47 wins after leading the semi-professional National Association in each of its five seasons. Hall of Fame pitcher Cy Young led the American League in wins in each of its first three years, amassing 33, 32, and 28 victories in those seasons for the Boston Americans. Warren Spahn leads all players with 8 win championships for the Boston and Milwaukee Braves in his 21 seasons.

Six titles

Three players have led their league in wins six times during their careers. Grover Cleveland Alexander led the National League in victories six times, with a single-season career-high 33 wins in 1916. In the American League, two pitchers have accomplished the same feat: Walter Johnson, whose 36 wins in 1913—his first season leading the league—were a single-season career high, and Bob Feller.

Five and four titles

In addition to his three American League wins, Young also led the National League twice to amass the third-highest total of win championships in major league history. Joe McGinnity and Tom Glavine also captured five wins titles in the National League. Pitchers who have led their league four times include Steve Carlton, Roger Clemens, Christy Mathewson, Hal Newhouser, and Robin Roberts.

Most wins in a Major League season

holds the single-season record for the most games won in a major league season; he notched 59 victories in 1884. There is a discrepancy in Radbourn's victory total in 1884. The classic MacMillan Baseball Encyclopedia, as well as other sources credit Radbourn with 60 wins, other sources place his win total as high as 62. He and John Clarkson are the only pitchers to exceed 50 wins in a single season in the current major leagues; Guy Hecker also accomplished the feat in the American Association. The American League leader is Jack Chesbro, who won 41 games for the New York Yankees in 1904; his total is the highest since Major League Baseball's consolidation in 1901. The highest total in the National League since 1901 is Mathewson's 37 victories in 1908. The largest margin of victory for the title is 21 wins, achieved by Clarkson in 1889; he won 49 games, while his closest competitors won 28 each. The American League title's largest margin of victory is 16 wins—Ed Walsh notched 40 wins in 1908, followed by Addie Joss and Ed Summers with 24 victories.
The number of wins required to lead the league each season has gone down significantly over the last century. For example, from 1900–1920, the average number of wins for the AL league leader was 30.8; from 1990–2010, it was 20.9.

Ties

Ties for the win championship are common. The most recent tie in the American League was in 2012, when Jered Weaver and David Price tied for the lead with 20 wins each, and the most recent tie in the National League was in 2011, when Ian Kennedy and Clayton Kershaw tied with 21 wins each. The most pitchers to share the title in a single season is six, accomplished in 2006 when Aaron Harang, Derek Lowe, Brad Penny, John Smoltz, Brandon Webb, and Carlos Zambrano each won 16 games in the National League. In the American League, four pitchers shared the award in the strike-shortened 1981 season.

Key

National League

Year	Champion	W	Team	Runner-up	W	Ref
	^†	47	Chicago White Stockings		45
		40	Boston Red Caps		35
		40	Boston Red Caps		30
	^†	47	Providence Grays		43
		45	Cleveland Blues		43
		31	Chicago White Stockings Boston Red Caps		29
		36	Cleveland Blues	^†	33
	^†	48	Providence Grays	^†	46
	^†	60	Providence Grays		46
	^†	53	Chicago White Stockings	^†	44
		42	Detroit Wolverines New York Giants	^†	36
	^†	38	Chicago White Stockings	^†	35
	^†	35	New York Giants	^†	33
	^†	49	Boston Beaneaters		28
		41	Chicago White Stockings		38
		44	Chicago White Stockings		33
		36	Chicago White Stockings Cleveland Spiders		35
		36	Pittsburgh Pirates		34
	^†	36	New York Giants		33
	^†	35	Cleveland Spiders		31
		30	Pittsburgh Pirates Boston Beaneaters	^†	28
	^†	31	Boston Beaneaters	^†	28
	^†	31	Boston Beaneaters		28
		28	Baltimore Orioles Brooklyn Superbas	^†	27
	^†	28	Brooklyn Superbas		20
		25	Brooklyn Superbas		23
	^†	28	Pittsburgh Pirates		27
	^†	31	New York Giants	^†	30
	^†	35	New York Giants	^†	33
	^†	31	New York Giants		23
	^†	27	New York Giants	^†	26
	^†	24	New York Giants		23
	^†	37	New York Giants	^†	29
	^†	27	Chicago Cubs		25
	^†	27	New York Giants	^†	25
	^†	28	Philadelphia Phillies	^†	26
		26	Chicago Cubs New York Giants		24
		27	Philadelphia Phillies	^†	25
	^†	27	Philadelphia Phillies		26
	^†	31	Philadelphia Phillies		22
	^†	33	Philadelphia Phillies		25
	^†	30	Philadelphia Phillies		24
		22	Chicago Cubs		20
		25	New York Giants		21
	^†	27	Chicago Cubs		24
		22	Pittsburgh Pirates Brooklyn Robins		20
	^†	25	Cincinnati Reds		23
		27	Cincinnati Reds		25
	^†	28	Brooklyn Robins	^†	22
	^†	22	Brooklyn Robins		21
	Ray Kremer Lee Meadows Flint Rhem	20	Cincinnati Reds Pittsburgh Pirates Pittsburgh Pirates St. Louis Cardinals		19
		26	Chicago Cubs	^†	24
		25	New York Giants Pittsburgh Pirates	^†	22
		22	Chicago Cubs		19
		20	Pittsburgh Pirates Chicago Cubs		19
		19	Philadelphia Phillies St. Louis Cardinals Pittsburgh Pirates		18
		22	Chicago Cubs		20
	^†	23	New York Giants		20
	^†	30	St. Louis Cardinals		23
	^†	28	St. Louis Cardinals	^†	23
	^†	26	New York Giants	^†	24
	^†	22	New York Giants		20
		22	Chicago Cubs		21
		27	Cincinnati Reds		25
		22	Cincinnati Reds		20
		22	Brooklyn Dodgers Brooklyn Dodgers		19
		22	St. Louis Cardinals		21
		21	St. Louis Cardinals Cincinnati Reds Pittsburgh Pirates		18
		23	Cincinnati Reds		22
		23	Boston Braves St. Louis Cardinals		22
		21	St. Louis Cardinals		20
		22	Cincinnati Reds		21
		24	Boston Braves		20
	^†	21	Boston Braves		20
	^†	21	Boston Braves		20
		23	New York Giants New York Giants		22
	^†	28	Philadelphia Phillies		18
		23	Philadelphia Phillies Milwaukee Braves		20
	^†	23	Philadelphia Phillies		21
	^†	23	Philadelphia Phillies		20
		27	Brooklyn Dodgers		20
	^†	21	Milwaukee Braves		19
		22	Pittsburgh Pirates Milwaukee Braves		20
		21	Milwaukee Braves San Francisco Giants Milwaukee Braves		19
		21	St. Louis Cardinals Milwaukee Braves		20
	^†	21	Cincinnati Reds Milwaukee Braves		19
	^†	25	Los Angeles Dodgers		24
		25	Los Angeles Dodgers San Francisco Giants		23
		24	Chicago Cubs	^†	21
	^†	26	Los Angeles Dodgers		24
	^†	27	Los Angeles Dodgers	^†	25
		22	San Francisco Giants	^†	20
	^†	26	San Francisco Giants	^†	22
	^†	25	New York Mets	^†	23
		23	St. Louis Cardinals San Francisco Giants	^†	22
	^†	24	Chicago Cubs		20
	^†	27	Philadelphia Phillies	^†	21
		24	San Francisco Giants		19
		20	Los Angeles Dodgers Atlanta Braves		19
	^†	22	New York Mets		20
		22	San Diego Padres		21
	^†	23	Philadelphia Phillies	^†	21
	^†	21	San Diego Padres		20
		21	Houston Astros Atlanta Braves		18
	^†	24	Philadelphia Phillies		20
	^†	14	Cincinnati Reds		13
	^†	23	Philadelphia Phillies		19
		19	Philadelphia Phillies		17
		20	St. Louis Cardinals		18
		24	New York Mets		21
		21	Los Angeles Dodgers		20
		18	Chicago Cubs		17
		23	Los Angeles Dodgers Cincinnati Reds		20
		20	Houston Astros	^†	19
		22	Pittsburgh Pirates		20
		20	Atlanta Braves Pittsburgh Pirates		18
	^†	20	Atlanta Braves Chicago Cubs		16
	^†	22	San Francisco Giants Atlanta Braves		21
		16	Montréal Expos Atlanta Braves		14
	^†	19	Atlanta Braves		18
	^†	24	Atlanta Braves		18
		20	Atlanta Braves		19
	^†	20	Atlanta Braves		19
		22	Houston Astros		21
	^†	21	Atlanta Braves		20
		22	St. Louis Cardinals Arizona Diamondbacks	^†	21
	^†	24	Arizona Diamondbacks		23
		21	Atlanta Braves		18
		20	Houston Astros		18
		22	Florida Marlins		21
		16	Cincinnati Reds Los Angeles Dodgers Los Angeles Dodgers Atlanta Braves Arizona Diamondbacks Chicago Cubs		15
		19	San Diego Padres		18
		22	Arizona Diamondbacks		18
		19	St. Louis Cardinals		17
	^†	21	Philadelphia Phillies		20
		21	Arizona Diamondbacks Los Angeles Dodgers	^†	19
		21	Washington Nationals		20
		19	St. Louis Cardinals Washington Nationals		16
		21	Los Angeles Dodgers		20
		22	Chicago Cubs		19
		20	Washington Nationals		19
		18	Los Angeles Dodgers		17
		18	Chicago Cubs St. Louis Cardinals Washington Nationals		17
		18	Washington Nationals		17

American League

Year	Leader	W	Team	Runner-up	W	Ref
	^†	33	Boston Americans	^†	26
	^†	32	Boston Americans	^†	24
	^†	28	Boston Americans	^†	23
	^†	41	New York Highlanders		26
	^†	27	Philadelphia Athletics	^†	24
		27	New York Highlanders	^†	23
		27	Cleveland Naps Chicago White Sox		25
	^†	40	Chicago White Sox		24
		29	Detroit Tigers		25
		31	Philadelphia Athletics		26
		28	Philadelphia Athletics	^†	27
		34	Boston Red Sox	^†	33
	^†	36	Washington Senators		23
	^†	28	Washington Senators	^†	22
	^†	27	Washington Senators		24
	^†	25	Washington Senators		24
		28	Chicago White Sox	^†	24
	^†	23	Washington Senators	^†	22
		29	Chicago White Sox	^†	24
		31	Cleveland Indians		26
		27	New York Yankees St. Louis Browns	^†	25
		27	Philadelphia Athletics		26
		26	Cleveland Indians		21
	^†	23	Washington Senators	^†	21
		21	Chicago White Sox Philadelphia Athletics		20
		27	Cleveland Indians	^†	23
		22	New York Yankees Chicago White Sox	^†	20
		24	Philadelphia Athletics New York Yankees	^†	23
		24	Philadelphia Athletics		21
	^†	28	Philadelphia Athletics		25
	^†	31	Philadelphia Athletics		22
		26	Washington Senators	^†	25
		24	Washington Senators Philadelphia Athletics		22
	^†	26	New York Yankees		24
		25	Boston Red Sox		22
		23	Detroit Tigers		21
	^†	21	New York Yankees	^†	20
	^†	21	New York Yankees		20
	^†	24	Cleveland Indians	^†	21
	^†	27	Cleveland Indians		21
	^†	25	Cleveland Indians		22
		22	Boston Red Sox		21
		20	New York Yankees Detroit Tigers	^†	18
	^†	29	Detroit Tigers		27
	^†	25	Detroit Tigers		21
		26	Cleveland Indians Detroit Tigers		25
	^†	20	Cleveland Indians		19
	^†	21	Detroit Tigers		20
		25	Boston Red Sox		23
	^†	23	Cleveland Indians		21
	^†	22	Cleveland Indians		21
		24	Philadelphia Athletics	^†	23
		22	Washington Senators		21
		23	Cleveland Indians Cleveland Indians		20
		18	New York Yankees Cleveland Indians Boston Red Sox		17
		21	Detroit Tigers		20
		20	Detroit Tigers Chicago White Sox		16
		21	New York Yankees		17
	^†	22	Chicago White Sox		19
		18	Baltimore Orioles Cleveland Indians		16
	^†	25	New York Yankees		23
		23	New York Yankees		20
	^†	24	New York Yankees		21
		20	Los Angeles Angels Chicago White Sox		19
		21	Minnesota Twins		20
		25	Minnesota Twins		20
		22	Boston Red Sox Detroit Tigers		20
		31	Detroit Tigers		22
		24	Detroit Tigers		23
		24	Baltimore Orioles Baltimore Orioles Minnesota Twins		22
		25	Detroit Tigers		24
		24	Cleveland Indians Chicago White Sox		22
		24	Chicago White Sox		23
		25	Oakland Athletics Texas Rangers		22
	^†	23	New York Yankees Baltimore Orioles		22
	^†	22	Baltimore Orioles		21
		20	Minnesota Twins Kansas City Royals Baltimore Orioles	^†	19
		25	New York Yankees		22
		23	Baltimore Orioles		21
		25	Baltimore Orioles		22
		14	Baltimore Orioles Oakland Athletics Detroit Tigers Milwaukee Brewers		13
		19	Chicago White Sox		18
		24	Chicago White Sox		22
		20	Baltimore Orioles		19
		22	New York Yankees		20
		24	Boston Red Sox	^†	21
		20	Boston Red Sox Oakland Athletics		19
		24	Minnesota Twins		21
		23	Kansas City Royals		21
		27	Oakland Athletics		22
		20	Minnesota Twins Detroit Tigers		19
		21	Texas Rangers Toronto Blue Jays		20
		22	Chicago White Sox	^†	19
		17	New York Yankees	^†	16
	^†	19	Baltimore Orioles	^†	18
		21	New York Yankees		20
		21	Toronto Blue Jays		20
		20	Toronto Blue Jays New York Yankees Texas Rangers		19
	^†	23	Boston Red Sox		18
		20	Oakland Athletics Toronto Blue Jays		19
		21	Oakland Athletics		20
		23	Oakland Athletics		21
	^†	22	Toronto Blue Jays		21
		21	Boston Red Sox		20
		21	Los Angeles Angels of Anaheim		18
		19	Minnesota Twins New York Yankees		18
		20	Boston Red Sox		19
		22	Cleveland Indians	^†	20
		19	Seattle Mariners New York Yankees Detroit Tigers	^†	17
		21	New York Yankees		19
		24	Detroit Tigers		19
		20	Tampa Bay Rays Los Angeles Angels of Anaheim		18
		21	Detroit Tigers		18
		18	Cleveland Indians Detroit Tigers Los Angeles Angels of Anaheim		16
		20	Houston Astros		19
		22	Boston Red Sox		20
		18	Cleveland Indians Cleveland Indians Kansas City Royals		17
		21	Tampa Bay Rays	Corey Kluber	20
		21	Houston Astros	Gerrit Cole	20

Other major leagues

Year	Leader	W	Team	League	Runner-up	W	Ref
		40	Cincinnati Red Stockings	American Association		30
		43	Cincinnati Red Stockings	American Association	^†	41
		52	Louisville Eclipse	American Association		37
		40	Baltimore Monumentals	Union Association		28
		40	St. Louis Browns	American Association		39
		41	St. Louis Browns Pittsburgh Alleghenys	American Association		38
		46	Baltimore Orioles	American Association		37
		45	St. Louis Browns	American Association		35
		40	Brooklyn Bridegrooms	American Association		35
		36	Philadelphia Athletics Baltimore Orioles	American Association		34
		33	Chicago Pirates	Players' League		30
		35	Baltimore Orioles	American Association		34
		29	Chicago Chi-Feds	Federal League		26
		25	Chicago Chi-Feds	Federal League		23

Footnotes

Recognized "major leagues" include the current American and National Leagues and several defunct leagues—the American Association, the Federal League, the Players' League, and the Union Association.
A pitcher must throw a minimum of one inning per game scheduled for his team during the season to qualify for the win title.

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