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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Johnny Pépin | .4860 | 2006 | |
| 2 | Oscar Valencia | .4849 | 2006 | |
| 3 | Álex Hernández | .4742 | 2000 | |
| 4 | Raúl Ramírez | .4741 | 1995 | |
| 5 | Brad Pierce | .4739 | 2002 | |
| 6 | Alexis Picasso | .4703 | 2012 | |
| 7 | Todd Valenti | .4668 | 2011 | |
| 8 | Jordan Reeves | .4658 | 2051 | |
| 9 | Ming Er | .4636 | 2005 | |
| 10 | Dani Rodríguez | .4631 | 1989 | |
| 11 | Tom Schilling | .4620 | 2035 | |
| 12 | Pepe González | .4601 | 2006 | |
| 13 | Zach August | .4600 | 2028 | |
| 14 | Erwijn de Jong | .4595 | 2034 | |
| 15 | Álex Hernández | .4591 | 1998 | |
| 16 | Willie Garcia | .4583 | 2002 | |
| 17 | Tejano Villesca | .4582 | 1990 | |
| 18 | Bruce Viggiano | .4581 | 2036 | |
| 19 | Victoriano Rincón | .4573 | 1995 | |
| 20 | Dave Wyatt | .4560 | 1993 | |
| 21 | Koi-sho Chai | .4547 | 2004 | |
| 22 | Tom Cole | .4535 | 2006 | |
| 23 | Jayden Copeland | .4533 | 2030 | |
| 24 | Adrián Pérez | .4520 | 1990 | |
| 25 | Tony Palencia | .4519 | 1985 | |
| 26 | Erik Curran | .4477 | 2034 | |
| 27 | Tony Palencia | .4476 | 1981 | |
| 28 | Jimmy Gray | .4465 | 2013 | |
| 29 | Pat Graves | .4462 | 2034 | |
| 30 | Tom Dewar | .4459 | 2026 | |
| 31 | Jerrod Clark | .4449 | 2014 | |
| 32 | Ijsbert Roche | .4442 | 2034 | |
| 33 | Álex Hernández | .4437 | 1997 | |
| 34 | Marlon DeClare | .4415 | 1990 | |
| 35 | Mark Steward | .4414 | 1982 | |
| 36 | J.J. Caplan* | .4406 | 2001 | |
| 37 | Racer Wilkerson | .4395 | 2036 | |
| 38 | Oscar Valencia | .4391 | 2004 | |
| 39 | Johnny Bright | .4380 | 2028 | |
| 40 | Tomas van Dijk | .4378 | 2034 | |
| 41 | Sidney Ishibashi | .4376 | 2038 | |
| 42 | Dave Bryan | .4371 | 2008 | |
| 43 | Roger Dieter | .4368 | 1980 | |
| 44 | Okitsugu Tanaka | .4365 | 1992 | |
| 45 | Pasqual Gonzales | .4362 | 1986 | |
| 46 | Izzy Briseno | .4360 | 2012 | |
| 46 | Tom Brown | .4360 | 2034 | |
| 48 | Napoleon Mendoza | .4355 | 2004 | |
| 49 | Pasqual Gonzales | .4348 | 1987 | |
| 50 | Al Hamilton* | .4346 | 2013 | |
| 50 | Brad Pierce | .4346 | 1999 | |
| 52 | Jonathon Fullem | .4343 | 2022 | |
| 53 | Victor Montano | .4335 | 2004 | |
| 54 | Ron Barber | .4331 | 2002 | |
| 55 | Troy Seeley | .4319 | 2008 | |
| 56 | Víctor Álvarez | .4315 | 2000 | |
| 57 | Ron Bedell | .4313 | 2017 | |
| 58 | Gene Cunningham | .4312 | 1989 | |
| 59 | Cristo Sandaval | .4309 | 1983 | |
| 60 | Adan Bosworth | .4304 | 2031 | |
| 61 | Erik Hudson | .4303 | 2015 | |
| 61 | Hugh O'Quinn | .4303 | 1998 | |
| 63 | Jerrod Clark | .4300 | 2005 | |
| 64 | Gene Cunningham | .4297 | 1991 | |
| 65 | Geoff Sutherland | .4294 | 1997 | |
| 66 | Tom Roseboom | .4292 | 2019 | |
| 67 | Manny Mireles | .4288 | 2008 | |
| 68 | Luis Bochenski | .4286 | 2036 | |
| 69 | Doug Richardson | .4283 | 1998 | |
| 70 | Brad Pierce | .4276 | 1998 | |
| 71 | Ian Jones | .4270 | 2025 | |
| 72 | Roddy Sierra | .4268 | 2035 | |
| 72 | Dave Piekarski* | .4268 | 2009 | |
| 74 | Ian Hickey | .4267 | 2035 | |
| 75 | Christopher Misiano | .4263 | 1985 | |
| 76 | Jarrod Sanders | .4262 | 2017 | |
| 77 | Jed Foster | .4261 | 1997 | |
| 78 | Ron Hammond | .4259 | 2030 | |
| 79 | Dennis Moulton | .4257 | 2042 | |
| 80 | Doug Hines | .4255 | 1995 | |
| 80 | Alberto Decordova | .4255 | 1979 | |
| 80 | Linus Robb | .4255 | 2018 | |
| 83 | Shane Berry | .4254 | 2008 | |
| 84 | Renaldo Domínguez | .4253 | 1995 | |
| 85 | Milagro Hernández | .4252 | 1994 | |
| 86 | Victoriano Rincón | .4250 | 1997 | |
| 87 | Ismael Reyes | .4249 | 1992 | |
| 88 | Nicolás Arce | .4248 | 1985 | |
| 89 | Phil Sephton | .4246 | 1983 | |
| 89 | Fernando Lopez | .4246 | 1995 | |
| 91 | Yoshiya Hashimoto | .4245 | 2028 | |
| 91 | Pete Gentry | .4245 | 1990 | |
| 91 | Álex Hernández | .4245 | 1992 | |
| 94 | Bruce Gonzalez | .4243 | 2017 | |
| 95 | William Lehnhardt | .4242 | 2009 | |
| 96 | Donte Hale | .4241 | 2026 | |
| 96 | Hidetoshi Haraguchi | .4241 | 2006 | |
| 98 | Erik Finkler | .4234 | 2008 | |
| 98 | Gene Jefferson | .4234 | 1998 | |
| 100 | Tony Palencia | .4228 | 1987 |
