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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Carlos Helásquez | .4928 | 1964-1981 | |
| 2 | Tim Bamber | .4848 | 1973-1977 | |
| 3 | Tony Daley | .4626 | 1964-1977 | |
| 4 | Mario Verbiest# | .4524 | 1973-1988 | |
| 5 | Jamel Bouvet | .4406 | 1958-1970 | |
| 6 | Pepe García | .4393 | 1977-1984 | |
| 7 | Ramon den Blick | .4379 | 1961-1970 | |
| 8 | Zak Wilson# | .4339 | 1981-1988 | |
| 9 | Sterling Sverdloff | .4277 | 1958-1964 | |
| 10 | Julián Carrillo | .4265 | 1967-1977 | |
| 11 | Juuso Mikkola | .4264 | 1958-1970 | |
| 12 | Callum Bourke | .4259 | 1958-1967 | |
| 13 | Raúl Fernández | .4234 | 1958-1967 | |
| 14 | Lucas Gudereit | .4202 | 1961-1973 | |
| 15 | Jorge López | .4174 | 1964-1973 | |
| 16 | Armandek Uryniuk | .4128 | 1967-1977 | |
| 17 | Lars Häppölä# | .4127 | 1984-1988 | |
| 18 | Cedric Lever | .4000 | 1958-1973 | |
| 19 | Javier Acosta# | .3939 | 1981-1988 | |
| 20 | Arnim Wille | .3893 | 1958-1977 | |
| 20 | Elliot Haddow | .3893 | 1964-1967 | |
| 22 | Alec Marshall# | .3780 | 1984-1988 | |
| 23 | Renault Strambi | .3763 | 1958-1964 | |
| 24 | Valentín Franco | .3759 | 1973-1981 | |
| 25 | Immel Dini | .3750 | 1967-1981 | |
| 26 | Kaseeb bin Kahil# | .3731 | 1984-1988 | |
| 27 | José Montero | .3698 | 1958-1970 | |
| 28 | Fita Onkwani# | .3629 | 1981-1988 | |
| 29 | Isko Ahonen# | .3542 | 1981-1988 | |
| 30 | Ryan Murchie | .3537 | 1973-1984 | |
| 31 | Abu Jelani | .3535 | 1964-1973 | |
| 32 | Seanan Puryer | .3526 | 1964-1977 | |
| 33 | Puck Huijbregts | .3510 | 1973-1984 | |
| 34 | Carlos Juárez | .3485 | 1958-1970 | |
| 35 | Sadatake Iwasaki | .3457 | 1958-1964 | |
| 36 | Albert Hernández | .3386 | 1967-1981 | |
| 37 | Oktav Strobl | .3353 | 1961-1973 | |
| 38 | Rudolph Peterhansel# | .3083 | 1984-1988 | |
| 39 | Carlos Alaniz | .3061 | 1964-1977 | |
| 40 | Doug Tansell | .3058 | 1967-1977 | |
| 41 | Ferry van Amersfoort | .2828 | 1967-1981 | |
| 42 | Abdul-Ghafur bin Bahiyy al Din# | .2798 | 1981-1988 | |
| 43 | Raúl Martínez | .2686 | 1970-1981 | |
| 44 | Alan Viccars | .2652 | 1973-1981 | |
| 45 | Finnegan McKilligan | .2606 | 1977-1988 | |
| 46 | Mathieu Masson | .2171 | 1961-1970 | |
| 47 | Hae-weon Pak | .2126 | 1958-1970 |
