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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WPCT | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Paul Erickson# | 1.000 | 1999 | |
| 2 | Buck Marrow# | .938 | 1997 | |
| 3 | Chad Gaudin | .900 | 1984 | |
| 4 | Dizzy Dean# | .897 | 1996 | |
| 5 | Luke Weaver# | .895 | 1995 | |
| 6 | Don Drysdale# | .875 | 2000 | |
| 6 | Sam Jones# | .875 | 2000 | |
| 6 | Dave Ford# | .875 | 1999 | |
| 9 | Barry Zito | .857 | 1985 | |
| 9 | Rick Rhoden# | .857 | 1998 | |
| 11 | Carl Hubbell# | .852 | 1999 | |
| 12 | Don Drysdale# | .840 | 2001 | |
| 13 | Blake Snell# | .839 | 1996 | |
| 14 | Rick Rhoden# | .824 | 1996 | |
| 15 | Daisuke Matsuzaka | .818 | 1987 | |
| 15 | Kevin Kobel | .818 | 1981 | |
| 15 | Dustin Hermanson# | .818 | 1994 | |
| 18 | Brayan Bello# | .815 | 1998 | |
| 19 | Les Mueller | .812 | 1981 | |
| 20 | Tom Brewer# | .810 | 1999 | |
| 20 | Dustin Hermanson# | .810 | 1996 | |
| 20 | Jim Golden# | .810 | 1998 | |
| 23 | Vern Olsen# | .808 | 1995 | |
| 23 | Sonny Gray# | .808 | 1999 | |
| 25 | Hiroki Kuroda# | .800 | 1997 | |
| 25 | Sam McDowell | .800 | 1992 | |
| 25 | Jim Willis | .800 | 1984 | |
| 25 | Jack Fisher# | .800 | 2000 | |
| 25 | Jim Willis | .800 | 1985 | |
| 25 | Gaylord Perry | .800 | 1983 | |
| 31 | Dave Goltz# | .792 | 1995 | |
| 31 | Roy Oswalt# | .792 | 1990 | |
| 33 | Brett Tomko# | .789 | 2001 | |
| 33 | Ray Bare# | .789 | 2000 | |
| 35 | Hub Pruett | .786 | 1984 | |
| 36 | Roy Oswalt# | .783 | 1989 | |
| 36 | Shawn Chacon# | .783 | 1989 | |
| 36 | Mike LaCoss | .783 | 1988 | |
| 36 | Blake Stein | .783 | 1984 | |
| 40 | Tyler Anderson | .778 | 1983 | |
| 40 | Dustin Hermanson# | .778 | 2001 | |
| 40 | Albie Lopez | .778 | 1985 | |
| 40 | Jerome Williams# | .778 | 2001 | |
| 44 | Kenta Maeda | .773 | 1989 | |
| 44 | Scott Sanderson | .773 | 1989 | |
| 46 | Ed Hanyzewski# | .769 | 2000 | |
| 46 | Jon Matlack | .769 | 1991 | |
| 46 | Mark Buehrle# | .769 | 1984 | |
| 46 | Mark Langston* | .769 | 1989 | |
| 50 | Carl Hubbell# | .767 | 1997 | |
| 50 | Blake Stein | .767 | 1982 | |
| 52 | Reyes Moronta | .765 | 1984 | |
| 52 | Bobby Shantz | .765 | 1989 | |
| 54 | Red Munger# | .762 | 1999 | |
| 54 | John Miller# | .762 | 1991 | |
| 54 | Jimmy Key# | .762 | 1988 | |
| 54 | Jin-ho Cho | .762 | 1980 | |
| 58 | Carl Hubbell# | .760 | 2001 | |
| 58 | Tommy Milone# | .760 | 2000 | |
| 58 | Ike Delock | .760 | 1989 | |
| 58 | Jimmy Key# | .760 | 1990 | |
| 58 | Rick Rhoden# | .760 | 1997 | |
| 58 | Roy Oswalt# | .760 | 1991 | |
| 58 | Nathan Eovaldi# | .760 | 2001 | |
| 58 | Roy Oswalt# | .760 | 1997 | |
| 66 | Joe Coleman | .750 | 1984 | |
| 66 | Paul Moskau | .750 | 1984 | |
| 66 | John Miller# | .750 | 1989 | |
| 66 | Hal Newhouser | .750 | 1993 | |
| 66 | Wayne Schurr# | .750 | 1993 | |
| 66 | Chris Bosio | .750 | 1992 | |
| 66 | Johnny Niggeling | .750 | 1980 | |
| 66 | Earl Francis# | .750 | 1994 | |
| 66 | Ed Hanyzewski# | .750 | 1998 | |
| 66 | Bob Anderson | .750 | 1989 | |
| 66 | Mark Langston* | .750 | 1980 | |
| 66 | Bob Knepper | .750 | 1987 | |
| 66 | Roy Oswalt# | .750 | 1998 | |
| 66 | Mike Nagy# | .750 | 1996 | |
| 66 | Ricky Romero | .750 | 1993 | |
| 66 | Robbie Ray | .750 | 1980 | |
| 82 | Dizzy Dean# | .741 | 1994 | |
| 82 | Ed Heusser | .741 | 1993 | |
| 82 | Aaron Nola | .741 | 1994 | |
| 85 | Foster Edwards# | .739 | 1986 | |
| 85 | Urbano Lugo | .739 | 1986 | |
| 85 | Jon Matlack | .739 | 1985 | |
| 85 | Wayne Schurr# | .739 | 1994 | |
| 85 | Joe Moeller# | .739 | 1994 | |
| 85 | Carl Hubbell# | .739 | 2000 | |
| 85 | Bruce Howard# | .739 | 1990 | |
| 85 | Walker Buehler# | .739 | 1988 | |
| 93 | Mike Trombley | .737 | 1981 | |
| 93 | Pete Smith# | .737 | 1998 | |
| 95 | Tom Gordon# | .731 | 1997 | |
| 95 | Kip Wells# | .731 | 1990 | |
| 95 | Pete Mikkelsen | .731 | 1980 | |
| 95 | Mark Buehrle# | .731 | 1983 | |
| 95 | Daisuke Matsuzaka | .731 | 1988 | |
| 95 | Ben Sheets | .731 | 1986 |
