List of Major League Baseball single-season records

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Records are for post 1900 only and need to be verified by a reference source, preferably the Elias Book of Baseball Records.

Home Runs

Barry Bonds	San Francisco Giants	73	2001
Mark McGwire	St. Louis Cardinals	70	1998
Sammy Sosa	Chicago Cubs	66	1998

Hits

Ichiro Suzuki	Seattle Mariners	262	2004
George Sisler	St. Louis Browns	257	1920
Bill Terry	New York Giants	254	1930
Lefty O'Doul	Philadelphia Phillies	254	1929

Batting Average

Nap Lajoie	Philadelphia Athletics	.426	1901
Rogers Hornsby	St. Louis Cardinals	.424	1924
George Sisler	St. Louis Browns	.420	1922

Runs Batted In (RBI)

Hack Wilson	Chicago Cubs	191	1930
Lou Gehrig	New York Yankees	184	1931
Hank Greenberg	Detroit Tigers	183	1937

Runs

Billy Hamilton	Philadelphia Phillies	192	1894
Lou Gehrig	New York Yankees	167	1936
Babe Ruth	New York Yankees	163	1928
Lou Gehrig	New York Yankees	163	1931

Wins

Jack Chesbro	New York Highlanders	41	1904
Ed Walsh	Chicago White Sox	40	1908
Christy Mathewson	New York Giants	37	1908

• Al Spalding won 54 games in 1875, as well as 41 and 52, respectively, in the 2 years prior, and 47 in the following year.
• Charles "Old Hoss" Radbourn won 60 games in 1884.

Earned Run Average (ERA)

Dutch Leonard	Boston Red Sox	0.96	1914
Mordecai Brown	Chicago Cubs	1.04	1906
Bob Gibson	St. Louis Cardinals	1.12	1968

Strikeouts

Nolan Ryan	California Angels	383	1973
Sandy Koufax	Los Angeles Dodgers	382	1965
Randy Johnson	Arizona Diamondbacks	372	2001

• Matt Kilroy holds the All-Time record striking out 513 batters in 1886.

Saves

Francisco Rodriguez	Los Angeles Angels of Anaheim	62	2008
Bobby Thigpen	Chicago White Sox	57	1990
John Smoltz	Atlanta Braves	55	2002
Éric Gagné	Los Angeles Dodgers	55	2003

• http://www.mlb.com
• http://www.baseball-almanac.com

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