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MLB Postseason Single-Season Earned Run Average Record Progression

Every season that raised the bar, and the leader in every season between.

All-time career leaders →

The MLB Postseason single-season earned run average record is 0.00, set by Christy Mathewson in 1905. It has stood for 121 years. The mark has been raised 1 times since 1903.

ERAWSOSVWHIPIPK/9BB/9K/BBSHOCGGSGLBBW-L%

Record Holders

2 marks since 1903
Year Player ERA Stood for
1905 Christy Mathewson Christy Mathewson 0.00 still standing
1903 Cy Young Cy Young 1.85 2 years

The earliest marks here are records only in the sense that nobody had done better yet. Season length, schedule and the rules themselves have all changed, so a figure from the 1870s is not comparable with a modern one and is not offered as though it were.

Every Season

137 seasons
Year Leader ERA
2026 Bryan Baker 0.00
2026 Aaron Ashby 0.00
2025 Roki Sasaki 0.84
2024 Matt Boyd 0.77
2023 Kevin Ginkel 0.00
2022 Ryan Pressly 0.00
2022 Bryan Abreu 0.00
2021 Will Smith 0.00
2020 Ian Anderson 0.96
2019 Walker Buehler 0.71
2018 Josh Hader 0.00
2017 Stephen Strasburg 0.00
2016 Cody Allen 0.00
2015 Wade Davis 0.00
2015 Luke Hochevar 0.00
2014 Jeremy Affeldt 0.00
2013 Trevor Rosenthal 0.00
2012 Jeremy Affeldt 0.00
2011 Matt Moore 0.90
2010 Matt Cain 0.00
2010 Brian Wilson 0.00
2009 Mariano Rivera 0.56
2008 Jonathan Papelbon 0.00
2007 Jonathan Papelbon 0.00
2006 Kenny Rogers 0.00
2005 Kelvim Escobar 1.59
2004 Keith Foulke 0.64
2003 Mariano Rivera 0.56
2002 Francisco Rodriguez 1.93
2001 Ramiro Mendoza 0.73
2000 Mariano Rivera 1.72
1999 Pedro Martinez 0.00
1999 Mariano Rivera 0.00
1999 John Rocker 0.00
1998 Mariano Rivera 0.00
1997 Denny Neagle 0.00
1996 Mariano Rivera 0.63
1995 Norm Charlton 1.35
1993 Roger Mason 0.84
1992 Jimmy Key 0.75
1991 Doug Drabek 0.60
1990 Doug Drabek 1.65
1989 Mike Moore 1.35
1988 Gene Nelson 0.82
1987 Dave Dravecky 0.60
1986 Mike Scott 0.50
1985 Ken Dayley 0.00
1984 Dave Dravecky 0.00
1984 Craig Lefferts 0.00
1983 Mike Boddicker 0.00
1982 Joaquin Andujar 1.80
1981 Rich Gossage 0.00
1980 Joe Niekro 0.00
1979 Bert Blyleven 1.42
1978 Ron Guidry 1.06
1977 Sparky Lyle 1.29
1976 Don Gullett 1.17
1975 Rawly Eastwick 1.54
1974 Mike Marshall 0.75
1973 Rollie Fingers 0.98
1972 Tom Hall 0.57
1971 Dave Giusti 0.00
1971 Bruce Kison 0.00
1970 Clay Carroll 0.00
1969 Dave Boswell 0.84
1968 Mickey Lolich 1.67
1968 Bob Gibson 1.67
1967 Bob Gibson 1.00
1966 Dave McNally 1.59
1965 Sandy Koufax 0.38
1964 Jim Bouton 1.56
1963 Sandy Koufax 1.50
1962 Ralph Terry 1.80
1961 Whitey Ford 0.00
1960 Whitey Ford 0.00
1959 Larry Sherry 0.71
1958 Warren Spahn 2.20
1957 Lew Burdette 0.67
1956 Don Larsen 0.00
1956 Clem Labine 0.00
1955 Johnny Podres 1.00
1954 Johnny Antonelli 0.84
1953 Carl Erskine 5.79
1952 Vic Raschi 1.59
1951 Eddie Lopat 0.50
1950 Allie Reynolds 0.87
1949 Allie Reynolds 0.00
1948 Gene Bearden 0.00
1947 Hugh Casey 0.87
1946 Joe Dobson 0.00
1945 Dizzy Trout 0.66
1944 Jack Kramer 0.00
1943 Ray Brown 0.00
1943 John Huber 0.00
1942 Satchel Paige 2.20
1941 Whit Wyatt 2.50
1940 Johnny Gorsica 0.79
1939 Roy Partlow 0.53
1938 Red Ruffing 1.50
1937 Andy Cooper 1.06
1936 Carl Hubbell 2.25
1935 Lon Warneke 0.54
1934 Paul Dean 1.00
1933 Carl Hubbell 0.00
1932 Willie Foster 1.50
1931 Bill Hallahan 0.49
1930 George Earnshaw 0.72
1929 Guy Bush 0.82
1928 Waite Hoyt 1.50
1927 Wilcy Moore 0.84
1926 Jesse Haines 1.08
1925 George Brown 0.53
1924 Rube Curry 0.55
1923 Sad Sam Jones 0.90
1922 Jesse Barnes 1.80
1921 Waite Hoyt 0.00
1920 Duster Mails 0.00
1919 Jimmy Ring 0.64
1918 Hippo Vaughn 1.00
1918 Carl Mays 1.00
1917 Rube Benton 0.00
1916 Babe Ruth 0.64
1915 Pete Alexander 1.53
1914 Bill James 0.00
1913 Eddie Plank 0.95
1913 Christy Mathewson 0.95
1912 Rube Marquard 0.50
1912 Hugh Bedient 0.50
1911 Charles Bender 1.04
1910 Charles Bender 1.93
1909 Babe Adams 1.33
1908 Mordecai Brown 0.00
1907 Ed Reulbach 0.75
1906 Ed Walsh 0.60
1905 Joe McGinnity 0.00
1905 Christy Mathewson 0.00 new record
1903 Cy Young 1.85 new record