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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | J.R. Richard | 0.000 | 1977 | |
| 1 | Roger Clemens# | 0.000 | 1996 | |
| 3 | Matt Young# | 0.293 | 1988 | |
| 4 | Mike Stanton# | 0.450 | 1993 | |
| 5 | Mark Guthrie# | 0.557 | 1995 | |
| 6 | Mark Knudson | 0.563 | 1989 | |
| 7 | Larry McWilliams | 0.720 | 1982 | |
| 8 | Butch Henry# | 1.038 | 1996 | |
| 9 | Mark Guthrie# | 1.059 | 1992 | |
| 10 | Dennis Leonard | 1.080 | 1979 | |
| 11 | Rudy May | 1.102 | 1977 | |
| 12 | Odell Jones | 1.125 | 1978 | |
| 13 | Marvin Freeman# | 1.174 | 1986 | |
| 14 | Mike Bruhert | 1.191 | 1979 | |
| 15 | Joe Johnson# | 1.216 | 1990 | |
| 16 | Bruce Kison | 1.256 | 1976 | |
| 17 | Andy Pettitte# | 1.271 | 1995 | |
| 18 | Rick Rhoden | 1.286 | 1983 | |
| 19 | Rick Reuschel | 1.337 | 1978 | |
| 20 | Bruce Hurst | 1.392 | 1989 | |
| 21 | Dennis Eckersley | 1.406 | 1980 | |
| 22 | Curt Schilling# | 1.479 | 1994 | |
| 23 | Mike Scott | 1.486 | 1986 | |
| 24 | Tom Seaver | 1.512 | 1978 | |
| 25 | John Candelaria | 1.588 | 1976 | |
| 25 | Kip Young | 1.588 | 1980 | |
| 25 | Bill C. Swift# | 1.588 | 1994 | |
| 25 | Bill Gullickson | 1.588 | 1985 | |
| 25 | J.R. Richard | 1.588 | 1978 | |
| 30 | Frank Tanana | 1.604 | 1980 | |
| 31 | Scott Garrelts# | 1.627 | 1986 | |
| 32 | Atlee Hammaker | 1.653 | 1982 | |
| 33 | Matt Young# | 1.667 | 1987 | |
| 34 | Dwight Gooden# | 1.688 | 1991 | |
| 34 | Teddy Higuera# | 1.688 | 1987 | |
| 34 | Mike LaCoss | 1.688 | 1982 | |
| 34 | David Wells# | 1.688 | 1991 | |
| 38 | Todd Van Poppel# | 1.705 | 1992 | |
| 39 | Kevin Appier# | 1.714 | 1993 | |
| 39 | Silvio Martinez | 1.714 | 1982 | |
| 41 | Steve Hargan | 1.723 | 1977 | |
| 42 | Steve Avery# | 1.731 | 1991 | |
| 43 | Ed Correa# | 1.761 | 1991 | |
| 44 | Ken Brett | 1.800 | 1976 | |
| 45 | Greg Maddux# | 1.820 | 1993 | |
| 46 | Mike Harkey# | 1.841 | 1993 | |
| 47 | Frank Viola# | 1.849 | 1989 | |
| 48 | Atlee Hammaker | 1.871 | 1985 | |
| 49 | Joe Johnson# | 1.875 | 1989 | |
| 50 | Floyd Youmans# | 1.901 | 1996 | |
| 51 | Andy Rincon | 1.913 | 1981 | |
| 52 | John Smoltz# | 1.929 | 1992 | |
| 53 | Scott Karl# | 1.944 | 1996 | |
| 54 | Bret Saberhagen# | 1.952 | 1987 | |
| 55 | Jimmy Key# | 1.976 | 1987 | |
| 56 | Bruce Hurst | 2.019 | 1987 | |
| 57 | John Burkett# | 2.025 | 1995 | |
| 58 | Frank Viola# | 2.038 | 1987 | |
| 59 | Bob Sebra# | 2.054 | 1995 | |
| 60 | Matt Young# | 2.077 | 1984 | |
| 60 | Doc Medich | 2.077 | 1976 | |
| 60 | Tommy John | 2.077 | 1978 | |
| 63 | Mark Guthrie# | 2.118 | 1996 | |
| 63 | Roger Erickson | 2.118 | 1986 | |
| 63 | Jerry Reuss | 2.118 | 1978 | |
| 66 | Silvio Martinez | 2.132 | 1983 | |
| 67 | Mike Mussina# | 2.143 | 1996 | |
| 68 | Steve Rogers | 2.146 | 1977 | |
| 69 | Mickey Lolich | 2.160 | 1976 | |
| 70 | John Montague | 2.177 | 1976 | |
| 71 | Floyd Youmans# | 2.204 | 1992 | |
| 71 | Fernando Valenzuela | 2.204 | 1980 | |
| 73 | Jose Rijo# | 2.213 | 1988 | |
| 73 | Jay Tibbs# | 2.213 | 1996 | |
| 75 | Jerry Reuss | 2.227 | 1982 | |
| 76 | Dwight Gooden# | 2.234 | 1992 | |
| 77 | Mike Scott | 2.250 | 1987 | |
| 77 | Jose DeLeon# | 2.250 | 1985 | |
| 77 | Silvio Martinez | 2.250 | 1981 | |
| 77 | Ken Brett | 2.250 | 1977 | |
| 77 | Rick Sutcliffe | 2.250 | 1981 | |
| 82 | Doug Drabek# | 2.274 | 1988 | |
| 83 | Danny Jackson# | 2.348 | 1986 | |
| 84 | Frank Viola# | 2.374 | 1985 | |
| 85 | Steve Avery# | 2.382 | 1992 | |
| 86 | Floyd Youmans# | 2.389 | 1993 | |
| 87 | Kevin Brown# | 2.395 | 1995 | |
| 88 | Gaylord Perry | 2.400 | 1977 | |
| 88 | Charlie Hough | 2.400 | 1978 | |
| 90 | Kevin Brown# | 2.418 | 1993 | |
| 90 | Randy Johnson# | 2.418 | 1994 | |
| 90 | Joe Hesketh | 2.418 | 1988 | |
| 93 | Reggie Cleveland | 2.475 | 1977 | |
| 94 | Matt Young# | 2.500 | 1990 | |
| 94 | Greg Maddux# | 2.500 | 1990 | |
| 96 | Randy Johnson# | 2.520 | 1992 | |
| 97 | Reggie Cleveland | 2.560 | 1976 | |
| 98 | Wayne Garland | 2.571 | 1979 | |
| 99 | Mike LaCoss | 2.585 | 1986 | |
| 99 | Roger Erickson | 2.585 | 1981 |
