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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OOPS | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Bucky Walters# | .3455 | 1940 | |
| 2 | Claude Passeau# | .3654 | 1945 | |
| 3 | Bobo Newsom# | .4248 | 1940 | |
| 4 | Mort Cooper# | .4363 | 1944 | |
| 5 | Mort Cooper# | .4631 | 1943 | |
| 6 | Schoolboy Rowe# | .4634 | 1934 | |
| 7 | Spud Chandler# | .5242 | 1943 | |
| 8 | Max Lanier# | .5293 | 1943 | |
| 9 | Schoolboy Rowe# | .5393 | 1935 | |
| 10 | Denny Galehouse# | .5495 | 1944 | |
| 11 | Red Ruffing# | .5655 | 1938 | |
| 12 | Red Ruffing# | .5907 | 1942 | |
| 13 | Tommy Bridges# | .5973 | 1935 | |
| 14 | Johnny Beazley# | .6025 | 1942 | |
| 15 | Hal Newhouser# | .6272 | 1945 | |
| 16 | Tommy Bridges# | .6354 | 1934 | |
| 17 | Hank Borowy# | .6547 | 1945 |
