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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Kevin Moore | .4164 | 1970-1980 | |
| 2 | Billy Becker | .3862 | 1961-1968 | |
| 3 | Lou Holmes | .3763 | 1969-1975 | |
| 4 | Jorge Eseinosa | .3739 | 1980-1991 | |
| 5 | Vaughn Green | .3687 | 1957-1962 | |
| 6 | Lineu Pal | .3574 | 1971-1976 | |
| 7 | Wayne Smith | .3537 | 1960-1970 | |
| 8 | Esteban Castillo | .3522 | 1971-1980 | |
| 9 | Hamilton MacGilchrist | .3520 | 1983-1990 | |
| 10 | Bruce Bruce | .3453 | 1972-1986 | |
| 11 | James Brown | .3430 | 1963-1974 | |
| 11 | Butch Peck | .3430 | 1966-1974 | |
| 13 | Jeremy Powers | .3383 | 1972-1986 | |
| 14 | Chris Ward | .3347 | 1995-2006 | |
| 15 | Pedro Ríos | .3284 | 1970-1980 | |
| 16 | Frank Holmes | .3282 | 1965-1969 | |
| 17 | Tony Morales | .3254 | 1987-1992 | |
| 18 | Octávio Javier | .3250 | 1979-1992 | |
| 19 | Daniel Schmidt | .3244 | 1971-1982 | |
| 20 | Val Shim | .3234 | 1957-1962 | |
| 21 | Eric Busby | .3216 | 1973-1980 | |
| 22 | Casey Ferrell | .3122 | 1981-1990 | |
| 23 | Roger Preslar | .3116 | 1957-1961 | |
| 24 | Mark Wilson# | .2977 | 2007-2014 | |
| 25 | Pat Walden | .2831 | 1969-1976 | |
| 26 | Jimmy Kerr# | .2685 | 2007-2012 |
