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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | George Pfister | .4402 | 1948-1949 | |
| 2 | Romel Beck# | .4362 | 1977-1979 | |
| 3 | Lew Flick | .4099 | 1940-1942 | |
| 4 | Alberto Lois | .3903 | 1973-1977 | |
| 5 | Andy Seminick | .3777 | 1941-1942 | |
| 6 | Al Gardella | .3740 | 1952-1953 | |
| 7 | Charlie Fox | .3714 | 1942-1947 | |
| 8 | Harvey Gentry | .3706 | 1947-1948 | |
| 9 | Willie Guzman | .3674 | 1973-1977 | |
| 10 | Melvin Montano | .3661 | 1970-1973 | |
| 11 | Steve Rametta | .3653 | 1971-1975 | |
| 12 | Russell Ramirez# | .3610 | 1976-1979 | |
| 13 | Alfredo Garcia | .3538 | 1977-1980 | |
| 14 | Armando Martinez | .3527 | 1971-1973 | |
| 15 | Andre Shields | .3508 | 1972-1975 | |
| 16 | Rafael Contreras | .3482 | 1972-1976 | |
| 17 | Joseph Sciarratta | .3425 | 0-0 | |
| 18 | Michael Jones | .3403 | 1973-1978 | |
| 19 | Tito Nanni# | .3375 | 1978-1981 | |
| 20 | Jon Alvares | .3333 | 1972-1977 | |
| 21 | Kenneth Berger | .3324 | 1973-1979 | |
| 21 | Nick Kotowski | .3324 | 1972-1974 | |
| 23 | Justin Henderson | .3311 | 1972-1974 | |
| 24 | Marshall Lowe | .3274 | 1971-1973 | |
| 25 | Mike Butler | .3262 | 1970-1973 | |
| 26 | Bernie Creger | .3148 | 1943-1944 | |
| 27 | Igor Roosendaal# | .3133 | 1975-1979 | |
| 28 | Travis Argento | .3122 | 1972-1975 | |
| 29 | Michael Lanum# | .3109 | 1979-1981 | |
| 30 | David Stevens# | .3064 | 1976-1980 | |
| 31 | Justin Schnare | .3019 | 1970-1975 | |
| 32 | Francisco Guerra# | .2971 | 1974-1979 | |
| 33 | Steve Douglas | .2967 | 1976-1980 | |
| 34 | Edwin Mohr# | .2848 | 1975-1981 |
