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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Benjamin Franklin Pierce | .6245 | 2013 | |
| 2 | Leon Sandcastle* | .5866 | 2015 | |
| 3 | Jon Mick | .5853 | 2025 | |
| 4 | Owen Stark | .5824 | 2021 | |
| 5 | Ignacio Ramos | .5784 | 2000 | |
| 6 | Michael Durham | .5691 | 2029 | |
| 7 | Sloan Daniel | .5640 | 2033 | |
| 8 | Jesús Garza | .5588 | 2012 | |
| 9 | Bo Jordan* | .5528 | 2010 | |
| 10 | Don Draper | .5520 | 2025 | |
| 11 | Ignacio Ramos | .5519 | 2001 | |
| 11 | Harry Dunn | .5519 | 2012 | |
| 13 | Boyd Beauford | .5494 | 2004 | |
| 14 | Ricky Conway | .5488 | 2023 | |
| 15 | Tom Mott | .5485 | 2027 | |
| 16 | Luis Barrera | .5477 | 2027 | |
| 17 | Freddie Rigsby | .5471 | 2004 | |
| 18 | Jean Girard | .5459 | 2021 | |
| 19 | Juan Mendoza | .5440 | 2031 | |
| 20 | Martín Félix | .5425 | 2010 | |
| 21 | Bo Jordan* | .5422 | 2012 | |
| 22 | Jesús Garza | .5415 | 2013 | |
| 23 | Daniel Gore | .5409 | 2026 | |
| 24 | Owen Stark | .5404 | 2023 | |
| 25 | Jon Mick | .5391 | 2026 | |
| 26 | Lance Bolden | .5389 | 2004 | |
| 27 | Lee O'Herlihy | .5385 | 2001 | |
| 28 | Harvey Newton | .5381 | 2003 | |
| 29 | Benjamin Franklin Pierce | .5369 | 2012 | |
| 30 | Grant Lee | .5361 | 2032 | |
| 31 | David Malave | .5360 | 2011 | |
| 32 | Manuel Rodríguez | .5345 | 2023 | |
| 32 | Harry Dunn | .5345 | 2011 | |
| 34 | Luke Jordan | .5340 | 2021 | |
| 35 | Juan Mendoza | .5339 | 2032 | |
| 36 | Robb Stark | .5337 | 2011 | |
| 37 | Félix Ramos# | .5333 | 2050 | |
| 38 | Owen Stark | .5320 | 2022 | |
| 39 | Esteban Díaz | .5318 | 1999 | |
| 40 | Alberto Rivera | .5314 | 1998 | |
| 41 | Mike Love | .5311 | 2011 | |
| 42 | Ettienne R. LaFitte | .5310 | 2026 | |
| 43 | Iran Brito | .5307 | 2017 | |
| 44 | Aubrey Anderson | .5299 | 2028 | |
| 45 | Carroll Phillips | .5298 | 2001 | |
| 46 | Drew Zod | .5297 | 2010 | |
| 46 | Mario Deórtez | .5297 | 2030 | |
| 48 | Gabriel Bonilla | .5294 | 2013 | |
| 49 | Cris Guzmán | .5289 | 1998 | |
| 49 | Pedro Monsalve | .5289 | 2010 | |
| 51 | Iran Brito | .5286 | 2016 | |
| 52 | Bill Carver | .5281 | 2001 | |
| 53 | Michael Best | .5279 | 2033 | |
| 54 | Jose Estopia | .5270 | 2046 | |
| 55 | Dave Wilfer | .5258 | 2023 | |
| 56 | J.J. McQuade | .5255 | 2027 | |
| 57 | Aaron Haney# | .5250 | 2038 | |
| 58 | Pat Curry | .5248 | 2001 | |
| 58 | Mike Love | .5248 | 2010 | |
| 60 | Pepe Reyes | .5246 | 2030 | |
| 61 | Félix Ramos# | .5238 | 2049 | |
| 62 | Rafael Solís | .5234 | 2033 | |
| 62 | Pedro Monsalve | .5234 | 2009 | |
| 64 | Freddie Rigsby | .5232 | 2008 | |
| 65 | Aaron Haney# | .5230 | 2037 | |
| 65 | Eugene Rodgers | .5230 | 2021 | |
| 67 | Chris Sweet | .5225 | 2021 | |
| 68 | Drew Zod | .5223 | 2014 | |
| 69 | William Brownlee | .5215 | 2001 | |
| 70 | Takanobu Eida | .5210 | 1998 | |
| 71 | Jorge García | .5207 | 2001 | |
| 72 | Benjamin Franklin Pierce | .5205 | 2014 | |
| 73 | Lee O'Herlihy | .5202 | 2000 | |
| 74 | Harlan W. Moore | .5190 | 2027 | |
| 75 | Drew Zod | .5183 | 2013 | |
| 76 | Freddie Rigsby | .5181 | 2005 | |
| 77 | Jeffrey Smith# | .5177 | 2037 | |
| 78 | Seth Henson | .5174 | 2009 | |
| 78 | Danny Albright | .5174 | 2023 | |
| 78 | José Vega | .5174 | 2032 | |
| 81 | Jorge Olivas | .5169 | 1998 | |
| 82 | David Simpson# | .5164 | 2037 | |
| 83 | Jared Davis | .5161 | 2023 | |
| 84 | Chester Larkin | .5160 | 2031 | |
| 85 | Raymond Aguilera | .5156 | 2025 | |
| 86 | Mitch Dalrymple | .5153 | 2031 | |
| 87 | Hong-Vu Sam# | .5146 | 2046 | |
| 88 | Tracy Warner | .5135 | 2016 | |
| 89 | Pedro Bustamante# | .5128 | 2040 | |
| 90 | Pancho Gamboa | .5125 | 2000 | |
| 91 | B.J. Porter | .5122 | 2010 | |
| 92 | Cisco Guerrero* | .5120 | 2020 | |
| 93 | Bo Jordan* | .5116 | 2011 | |
| 94 | Daniel Labrie, Jr. | .5115 | 2013 | |
| 95 | Jesús Garza | .5112 | 2011 | |
| 96 | Captain Joyride | .5108 | 2023 | |
| 97 | Carlos Ochoa | .5105 | 2026 | |
| 98 | Diego Vargas | .5103 | 1998 | |
| 99 | Paul Warren | .5097 | 2029 | |
| 100 | Richard Mitchell | .5091 | 2004 |
