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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jeff Giles | .5076 | 1950-1953 | |
| 2 | Cody Ruffin | .4582 | 1949-1952 | |
| 3 | Wyatt Newman | .4524 | 1954-1957 | |
| 4 | Jon Murphy | .4455 | 1949-1952 | |
| 5 | Howard Lawrence | .4436 | 1937-1940 | |
| 6 | Brennan MacFadden | .4376 | 1927-1930 | |
| 7 | Eugene Henderson | .4339 | 1959-1962 | |
| 8 | Tommy Gove | .4301 | 1949-1952 | |
| 9 | Chuck Bowman | .4271 | 1962-1965 | |
| 10 | Rafael Guerrero | .4247 | 1959-1962 | |
| 11 | Rick Cook | .3987 | 1954-1957 | |
| 12 | Mauro Rodríguez# | .3738 | 1974-1977 |
