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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Karl Gallizio# | .3772 | 1952 | |
| 2 | Jamie McIntyre# | .3688 | 1953 | |
| 3 | Valentin Covi# | .3687 | 1953 | |
| 4 | Yukio Kotani# | .3652 | 1952 | |
| 5 | Yukio Kotani# | .3440 | 1953 | |
| 6 | You-yi Zhào# | .3213 | 1953 | |
| 7 | Alain Viard# | .3145 | 1953 | |
| 8 | Alain Viard# | .3017 | 1952 | |
| 9 | Armando Llanes# | .3014 | 1953 | |
| 9 | Noah McMillan# | .3014 | 1953 | |
| 11 | Stephen Yeo# | .3010 | 1952 | |
| 12 | Jerry Maher# | .2872 | 1952 | |
| 13 | You-yi Zhào# | .2768 | 1952 | |
| 14 | Miguel Medellin# | .2677 | 1952 | |
| 15 | Miguel Medellin# | .2555 | 1953 |
