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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Pat Newell* | .4270 | 1980-1994 | |
| 2 | Juan Soto | .4005 | 2010-2020 | |
| 3 | Juan Morales* | .3972 | 1991-2007 | |
| 4 | Ian Ott* | .3872 | 1980-1997 | |
| 5 | Earl Witter | .3866 | 2016-2024 | |
| 6 | Steve Parsons | .3816 | 2002-2014 | |
| 7 | Tim Fleming | .3762 | 2002-2015 | |
| 8 | Jonathan Anderson | .3756 | 1980-1990 | |
| 9 | Yasutoshi Goto | .3739 | 1999-2009 | |
| 10 | Rogelio Trevino* | .3729 | 1980-1991 | |
| 11 | Eric Raab | .3718 | 1998-2014 | |
| 12 | Hirofumi Kihara | .3707 | 2017-2027 | |
| 13 | Mike Villagomez | .3700 | 1997-2007 | |
| 14 | Mike Berryhill | .3652 | 2027-2039 | |
| 15 | Tommy Bicknell | .3640 | 1980-1992 | |
| 16 | Sergio Rojas | .3633 | 1993-2012 | |
| 17 | Tristan Hunn | .3628 | 2014-2023 | |
| 18 | Jon Bouren | .3623 | 2000-2017 | |
| 19 | Eddie Dolly | .3618 | 2008-2021 | |
| 20 | Luis Zamorano | .3617 | 2030-2046 | |
| 21 | Jaylin Carthan | .3613 | 2016-2026 | |
| 22 | Dylan Tarver | .3608 | 2033-2044 | |
| 22 | Luis Mojica | .3608 | 2007-2023 | |
| 24 | Pat Zende | .3607 | 1989-2000 | |
| 25 | Chris Lewis | .3604 | 1998-2008 | |
| 26 | Ken Horowitz | .3569 | 2030-2044 | |
| 27 | Jeff Hogarth | .3550 | 1980-1988 | |
| 28 | Josh Negrete | .3548 | 1994-2001 | |
| 29 | Josh Caughell | .3546 | 1991-2004 | |
| 30 | Miguel Carrillo* | .3530 | 2011-2026 | |
| 31 | Izzy Romero | .3526 | 2021-2036 | |
| 32 | Glendon Sawdon | .3505 | 1980-1992 | |
| 33 | Luis Espinel | .3494 | 1991-2006 | |
| 33 | Steve Watson | .3494 | 2015-2028 | |
| 35 | Tim Strang | .3488 | 2031-2042 | |
| 36 | Joshua Ragsdale# | .3484 | 2045-2050 | |
| 37 | R.J. Borucki | .3481 | 2029-2042 | |
| 38 | Jim Lundgren | .3480 | 1997-2011 | |
| 39 | Luís Duarte | .3476 | 2035-2049 | |
| 40 | Juan Jaramillo | .3462 | 2006-2013 | |
| 41 | Kevin Frichtl | .3453 | 2004-2020 | |
| 42 | Jody Leverson | .3450 | 1980-1989 | |
| 43 | Jonathan Mitchell# | .3449 | 2038-2050 | |
| 44 | Mat Stapper | .3445 | 1989-2001 | |
| 44 | Liam Lyons# | .3445 | 2044-2050 | |
| 46 | Tom Sharpless | .3439 | 2013-2021 | |
| 47 | Josh Harris | .3437 | 1983-1993 | |
| 48 | Patrick Eick | .3436 | 1981-1993 | |
| 49 | Rich Lepper | .3435 | 1986-1999 | |
| 50 | Ernesto Espinoza | .3430 | 1993-2004 | |
| 51 | Rogelio Ceijas | .3429 | 1984-1997 | |
| 52 | Ethan Russell# | .3427 | 2042-2049 | |
| 53 | Jose Bonilla | .3426 | 2014-2030 | |
| 54 | Ted High | .3422 | 2023-2031 | |
| 55 | Alfredo Cardenas | .3418 | 2001-2014 | |
| 56 | Dan Neiman | .3416 | 1982-1996 | |
| 57 | Ben Herrin | .3414 | 2000-2013 | |
| 58 | Tim Nichols | .3413 | 1982-1994 | |
| 59 | Joey Brown | .3412 | 1985-1999 | |
| 60 | Mike Witt | .3409 | 1998-2006 | |
| 61 | Rodolfo Carrillo | .3407 | 1995-2002 | |
| 62 | Geoff Leja | .3401 | 2002-2010 | |
| 62 | Juan Luna | .3401 | 2026-2042 | |
| 64 | Sean Gunning | .3395 | 2014-2024 | |
| 65 | Matt Beasley | .3394 | 2014-2030 | |
| 66 | Danny Cole | .3391 | 1980-1993 | |
| 67 | Ernie Villanueva | .3387 | 2015-2027 | |
| 68 | Luis Guérin | .3386 | 1993-2006 | |
| 69 | David Sandoval | .3379 | 2010-2024 | |
| 70 | Esteban Gonzalez | .3377 | 2020-2032 | |
| 71 | Mike Huber | .3374 | 1983-1997 | |
| 72 | Rico Estrada | .3370 | 1980-1989 | |
| 73 | Lev Taylor | .3367 | 2029-2043 | |
| 74 | Bobby Gaines | .3363 | 2028-2041 | |
| 75 | Israel Soto | .3362 | 2016-2033 | |
| 75 | Frank Wolske | .3362 | 2022-2029 | |
| 77 | Wilfredo Navarro* | .3361 | 1980-1996 | |
| 78 | Jason Curtis | .3360 | 2030-2039 | |
| 79 | Luis Villagran | .3359 | 1984-1999 | |
| 79 | Eric Williams | .3359 | 2027-2042 | |
| 81 | Ignacio Robles | .3358 | 2034-2047 | |
| 82 | Josh Strausbaugh | .3357 | 1988-1996 | |
| 83 | Hector Flores | .3356 | 2026-2036 | |
| 84 | Bobby Jackson | .3350 | 1980-1988 | |
| 85 | Roy Popko# | .3345 | 2041-2050 | |
| 85 | Rogelio Ruiz | .3345 | 2023-2032 | |
| 87 | Sergio Rivera | .3342 | 2004-2014 | |
| 87 | Alfredo Zamudio | .3342 | 1988-2000 | |
| 89 | Ron Shuff | .3340 | 2027-2046 | |
| 89 | Joe Langham | .3340 | 1998-2007 | |
| 91 | Belly Morales | .3334 | 1994-2010 | |
| 92 | Leith Rogalski | .3332 | 2007-2013 | |
| 92 | Travis Walston | .3332 | 2027-2045 | |
| 94 | Luis Parra | .3325 | 1985-2000 | |
| 95 | Dilan Pérez# | .3318 | 2044-2050 | |
| 96 | Nate Zervos | .3311 | 1985-1999 | |
| 97 | Chris Espree | .3299 | 1980-1995 | |
| 98 | Andy Kuchta* | .3291 | 2030-2047 | |
| 99 | Rocky Graves | .3286 | 2004-2019 | |
| 100 | Mike Hostler | .3275 | 2031-2046 |
