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Athletics All-Time Leaders
ERA

1
Profile photo of Nels Potter

Nels Potter

1938-1948

5.81

2
Profile photo of Buck Ross

Buck Ross

1936-1941

5.39

3
Profile photo of Lynn Nelson

Lynn Nelson

1937-1939

5.37

4
Profile photo of Bill Dietrich

Bill Dietrich

1933-1948

5.05

5
Profile photo of Art Ditmar

Art Ditmar

1954-1962

4.97

6
Profile photo of George Caster

George Caster

1934-1940

4.97

7
Profile photo of Carl Scheib

Carl Scheib

1943-1954

4.85

8
Profile photo of Bob Hooper

Bob Hooper

1950-1952

4.82

9
Profile photo of Roy 'Slug' Mahaffey

4.82

10
Profile photo of Chris Codiroli

Chris Codiroli

1982-1987

4.66

11
Profile photo of Bob Hasty

Bob Hasty

1919-1924

4.65

12
Profile photo of Ron Darling

Ron Darling

1991-1995

4.63

13
Profile photo of Fred Heimach

Fred Heimach

1920-1926

4.57

14
Profile photo of Gil Heredia

Gil Heredia

1998-2001

4.55

15
Profile photo of Joe Coleman

Joe Coleman

1942-1953

4.55

16
Profile photo of Alex Kellner

Alex Kellner

1948-1958

4.54

17
Profile photo of Sugar Cain

Sugar Cain

1932-1935

4.50

18
Profile photo of Don Black

Don Black

1943-1945

4.39

19
Profile photo of Curt Young

Curt Young

1983-1993

4.33

20
Profile photo of Ed Rakow

Ed Rakow

1961-1963

4.26

21
Profile photo of Ray Herbert

Ray Herbert

1955-1961

4.25

22
Profile photo of Joe Blanton

Joe Blanton

2004-2008

4.25

23
Profile photo of Lou Brissie

Lou Brissie

1947-1951

4.22

24
Profile photo of Slim Harriss

Slim Harriss

1920-1926

4.21

25
Profile photo of George Earnshaw

George Earnshaw

1928-1933

4.18

26
Profile photo of Lum Harris

Lum Harris

1941-1946

4.17

27
Profile photo of Matt Keough

Matt Keough

1977-1983

4.13

28
Profile photo of Johnny Marcum

Johnny Marcum

1933-1935

4.12

29
Profile photo of Rube Walberg

Rube Walberg

1923-1933

4.11

30
Profile photo of Dick Fowler

Dick Fowler

1941-1952

4.11

31
Profile photo of Brian Kingman

Brian Kingman

1979-1982

4.10

32
Profile photo of Orlando Pena

Orlando Pena

1962-1965

4.07

33
Profile photo of Elmer Myers

Elmer Myers

1915-1918

4.00

34
Profile photo of Steve McCatty

Steve McCatty

1977-1985

3.99

35
Profile photo of Rick Langford

Rick Langford

1977-1986

3.97

36
Profile photo of Bob Welch

Bob Welch

1988-1994

3.94

37
Profile photo of Rollie Naylor

Rollie Naylor

1917-1924

3.93

38
Profile photo of Gio Gonzalez

Gio Gonzalez

2008-2011

3.93

39
Profile photo of Bud Daley

Bud Daley

1958-1961

3.93

40
Profile photo of Phil Marchildon

Phil Marchildon

1940-1949

3.92

41
Profile photo of Mark Mulder

Mark Mulder

2000-2004

3.92

42
Profile photo of Brett Anderson

Brett Anderson

2009-2019

3.91

43
Profile photo of Mike Norris

Mike Norris

1975-1990

3.89

44
Profile photo of Trevor Cahill

Trevor Cahill

2009-2018

3.88

45
Profile photo of Sean Manaea

Sean Manaea

2016-2021

3.86

46
Profile photo of Ned Garver

Ned Garver

1957-1960

3.86

47
Profile photo of Lew Krausse

Lew Krausse

1961-1969

3.85

48
Profile photo of Tom Gorman

Tom Gorman

1955-1959

3.84

49
Profile photo of Sam Gray

Sam Gray

1924-1927

3.80

50
Profile photo of Bobby Shantz

Bobby Shantz

1949-1956

3.80

51
Profile photo of Dave Stewart

Dave Stewart

1986-1995

3.73

52
Profile photo of Howard Ehmke

Howard Ehmke

1926-1930

3.73

53
Profile photo of Steve Ontiveros

Steve Ontiveros

1985-1995

3.70

54
Profile photo of Chuck Dobson

Chuck Dobson

1966-1973

3.66

55
Profile photo of Diego Segui

Diego Segui

1962-1972

3.65

56
Profile photo of Rich Harden

Rich Harden

2003-2011

3.65

57
Profile photo of Dan Haren

Dan Haren

2005-2007

3.64

58
Profile photo of Barry Zito

Barry Zito

2000-2015

3.58

59
Profile photo of Mike Moore

Mike Moore

1989-1992

3.54

60
Profile photo of Eddie Rommel

Eddie Rommel

1920-1932

3.54

61
Profile photo of Blue Moon Odom

Blue Moon Odom

1964-1975

3.53

62
Profile photo of Weldon Wyckoff

Weldon Wyckoff

1913-1916

3.52

63
Profile photo of Jack Quinn

Jack Quinn

1925-1930

3.51

64
Profile photo of Chris Bassitt

Chris Bassitt

2015-2021

3.44

65
Profile photo of Sonny Gray

Sonny Gray

2013-2017

3.42

66
Profile photo of Boardwalk Brown

Boardwalk Brown

1911-1914

3.41

67
Profile photo of Russ Christopher

Russ Christopher

1942-1947

3.40

68
Profile photo of Jing Johnson

Jing Johnson

1916-1928

3.35

69
Profile photo of Tim Hudson

Tim Hudson

1999-2004

3.30

70
Profile photo of Paul Lindblad

Paul Lindblad

1965-1976

3.29

71
Profile photo of Bobo Newsom

Bobo Newsom

1944-1953

3.22

72
Profile photo of Bullet Joe Bush

Bullet Joe Bush

1912-1928

3.19

73
Profile photo of Jesse Flores

Jesse Flores

1943-1947

3.15

74
Profile photo of Jim 'Catfish' Hunter

3.13

75
Profile photo of Scott Perry

Scott Perry

1918-1921

3.01

76
Profile photo of Vida Blue

Vida Blue

1969-1977

2.95

77
Profile photo of Jim Nash

Jim Nash

1966-1969

2.95

78
Profile photo of Weldon Henley

Weldon Henley

1903-1905

2.93

79
Profile photo of Ken Holtzman

Ken Holtzman

1972-1975

2.92

80
Profile photo of Rollie Fingers

Rollie Fingers

1968-1976

2.91

81
Profile photo of Lefty Grove

Lefty Grove

1925-1933

2.88

82
Profile photo of Dennis Eckersley

Dennis Eckersley

1987-1995

2.74

83
Profile photo of Jimmy Dygert

Jimmy Dygert

1905-1910

2.65

84
Profile photo of Jack Coombs

Jack Coombs

1906-1914

2.60

85
Profile photo of Andy Coakley

Andy Coakley

1902-1906

2.51

86
Profile photo of Harry Krause

Harry Krause

1908-1912

2.42

87
Profile photo of Eddie Plank

Eddie Plank

1901-1914

2.39

88
Profile photo of Chief Bender

Chief Bender

1903-1914

2.32

89
Profile photo of Cy Morgan

Cy Morgan

1909-1912

2.15

90
Profile photo of Rube Waddell

Rube Waddell

1902-1907

1.97