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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WPCT | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Willie Foster# | 1.000 | 1998 | |
| 1 | John Tudor | 1.000 | 1984 | |
| 1 | Steve Trout | 1.000 | 1981 | |
| 1 | Steve Trout | 1.000 | 1980 | |
| 1 | Len Barker | 1.000 | 1980 | |
| 1 | Bruce Hurst | 1.000 | 1988 | |
| 1 | Bruce Hurst | 1.000 | 1991 | |
| 1 | Eddie Lopat | 1.000 | 1985 | |
| 1 | Bob Bruce | 1.000 | 1993 | |
| 1 | Lefty Grove# | 1.000 | 1989 | |
| 1 | Christy Mathewson# | 1.000 | 1997 | |
| 1 | Mike Krukow | 1.000 | 1983 | |
| 1 | Scott Kazmir# | 1.000 | 1988 | |
| 1 | Van Mungo# | 1.000 | 1996 | |
| 1 | Bill Wise# | 1.000 | 1991 | |
| 1 | Storm Davis# | 1.000 | 1996 | |
| 1 | Ed Brandt# | 1.000 | 1997 | |
| 1 | Roger Clemens# | 1.000 | 1982 | |
| 1 | Jeff C D'Amico | 1.000 | 1988 | |
| 1 | Patrick Corbin | 1.000 | 1984 | |
| 1 | Happy Townsend# | 1.000 | 1992 | |
| 1 | Happy Townsend# | 1.000 | 1984 | |
| 1 | Scott T Baker | 1.000 | 1989 | |
| 1 | Bob Welch | 1.000 | 1987 | |
| 1 | Fernando Valenzuela* | 1.000 | 1988 | |
| 1 | Fernando Valenzuela* | 1.000 | 1983 | |
| 1 | Floyd Bannister | 1.000 | 1980 | |
| 1 | Frank Tanana | 1.000 | 1980 | |
| 1 | Jose DeLeon | 1.000 | 1985 | |
| 1 | Mario Soto | 1.000 | 1982 | |
| 1 | Mario Soto | 1.000 | 1981 | |
| 1 | Rick Rhoden | 1.000 | 1983 | |
| 1 | Al Orth# | 1.000 | 1998 | |
| 1 | Jim Bunning# | 1.000 | 1999 | |
| 1 | Jim Bunning# | 1.000 | 1998 | |
| 1 | Tommy Bond# | 1.000 | 1996 | |
| 1 | Frank Browning# | 1.000 | 1994 | |
| 1 | Dave Righetti# | 1.000 | 1994 | |
| 1 | Jim Abbott# | 1.000 | 1996 | |
| 1 | J A Happ# | 1.000 | 1993 | |
| 1 | Craig Swan# | 1.000 | 1995 | |
| 1 | Vinegar Bend Mizell# | 1.000 | 1994 | |
| 1 | Early Wynn# | 1.000 | 1999 | |
| 1 | Doyle Alexander | 1.000 | 1987 | |
| 1 | Jack Fisher# | 1.000 | 1999 | |
| 1 | John Denny | 1.000 | 1987 | |
| 1 | Richard Dotson | 1.000 | 1982 | |
| 1 | Dennis Eckersley | 1.000 | 1981 | |
| 1 | Arlie Pond# | 1.000 | 1996 | |
| 1 | Ben Sheets# | 1.000 | 1995 | |
| 1 | Bert Inks# | 1.000 | 1997 | |
| 1 | Ben Sheets# | 1.000 | 1988 | |
| 53 | Lefty Grove# | .833 | 1987 | |
| 53 | Kenta Maeda | .833 | 1990 | |
| 53 | Vinegar Bend Mizell# | .833 | 1990 | |
| 56 | Kenta Maeda | .800 | 1989 | |
| 56 | Pedro Ramos# | .800 | 1990 | |
| 56 | Ben Sheets# | .800 | 1994 | |
| 56 | Scott Sanderson | .800 | 1981 | |
| 56 | Britt Burns | .800 | 1980 | |
| 56 | Britt Burns | .800 | 1985 | |
| 56 | Jack Morris | .800 | 1987 | |
| 63 | Jim Abbott# | .750 | 1993 | |
| 63 | Bruce Berenyi | .750 | 1983 | |
| 63 | Patrick Corbin | .750 | 1985 | |
| 63 | Fernando Valenzuela* | .750 | 1985 | |
| 63 | Vinegar Bend Mizell# | .750 | 1992 | |
| 63 | Jose DeLeon | .750 | 1987 | |
| 63 | Steve Carlton | .750 | 1983 | |
| 63 | Nolan Ryan | .750 | 1986 | |
| 63 | LaMarr Hoyt | .750 | 1987 | |
| 63 | Kevin Appier# | .750 | 1991 | |
| 63 | John Denny | .750 | 1988 | |
| 63 | Jack Morris | .750 | 1989 | |
| 75 | John Denny | .667 | 1984 | |
| 75 | Masahiro Tanaka | .667 | 1986 | |
| 75 | Masahiro Tanaka | .667 | 1990 | |
| 75 | Len Barker | .667 | 1982 | |
| 75 | Bruce Berenyi | .667 | 1984 | |
| 75 | Steve Carlton | .667 | 1981 | |
| 75 | John Denny | .667 | 1986 | |
| 75 | Moose Haas | .667 | 1987 | |
| 75 | LaMarr Hoyt | .667 | 1986 | |
| 75 | Bob Knepper | .667 | 1984 | |
| 75 | Charlie Leibrandt | .667 | 1992 | |
| 75 | Bob Ojeda | .667 | 1986 | |
| 75 | Pascual Perez | .667 | 1988 | |
| 75 | Gaylord Perry | .667 | 1980 | |
| 75 | Nolan Ryan | .667 | 1983 | |
| 75 | Mario Soto | .667 | 1983 | |
| 75 | Fernando Valenzuela* | .667 | 1982 | |
| 75 | Fernando Valenzuela* | .667 | 1986 | |
| 75 | Patrick Corbin | .667 | 1986 | |
| 75 | Kevin Appier# | .667 | 1990 | |
| 75 | Kenta Maeda | .667 | 1994 | |
| 75 | Bill Wise# | .667 | 1992 | |
| 75 | Vinegar Bend Mizell# | .667 | 1989 | |
| 75 | Carlos Zambrano# | .667 | 1995 | |
| 75 | Dan Haren# | .667 | 1994 | |
| 75 | Dan Haren# | .667 | 1995 |
