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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Jeff Cummings | .4889 | 2020 | |
| 2 | Cristóbal Ruíz | .4863 | 2029 | |
| 3 | Ken Tardy# | .4797 | 2054 | |
| 4 | Langgeng Kawilarang | .4779 | 2018 | |
| 5 | Langgeng Kawilarang | .4759 | 2019 | |
| 6 | Teobaldo Vob | .4740 | 2029 | |
| 7 | Chet Ballard | .4688 | 2053 | |
| 8 | Marty Bence | .4684 | 2026 | |
| 9 | Dane Shirley | .4656 | 2048 | |
| 10 | Luis Castro | .4639 | 2024 | |
| 11 | Walt McMillan | .4621 | 2019 | |
| 12 | Pepe Galarza | .4617 | 2035 | |
| 13 | Jorge López | .4612 | 2019 | |
| 14 | Robbie Knisely | .4611 | 2026 | |
| 15 | José Ruíz | .4606 | 2035 | |
| 16 | Eldon Logan | .4602 | 2018 | |
| 17 | Gus Kramer | .4593 | 2051 | |
| 18 | Al Griffin | .4582 | 2038 | |
| 19 | Greg Jones | .4561 | 2028 | |
| 20 | Mauro Ruedos# | .4545 | 2054 | |
| 21 | Tim Wheeler | .4544 | 2030 | |
| 22 | Steve Hodges | .4542 | 2021 | |
| 22 | Rod Bruce# | .4542 | 2059 | |
| 24 | Cedric Murphy# | .4540 | 2054 | |
| 25 | Tai sun Hsueh | .4531 | 2047 | |
| 26 | Tyler Moore# | .4513 | 2061 | |
| 27 | Octávio Rivera | .4512 | 2045 | |
| 28 | Pepe Galarza | .4509 | 2036 | |
| 29 | Xavier Lorenzo | .4505 | 2039 | |
| 30 | Trey Livingston | .4503 | 2046 | |
| 30 | Eric Phillips | .4503 | 2029 | |
| 32 | Rusty Miller# | .4501 | 2064 | |
| 33 | Billy Childress | .4498 | 2021 | |
| 34 | Iván López# | .4494 | 2059 | |
| 35 | Chris Rogers | .4493 | 2016 | |
| 36 | Luis González | .4492 | 2037 | |
| 36 | Kip Jacobs | .4492 | 2023 | |
| 38 | Kanne de Gier# | .4489 | 2058 | |
| 39 | Diederick Kooijman* | .4488 | 2036 | |
| 40 | Leonardo Ocasio | .4472 | 2034 | |
| 41 | Raúl Peña | .4463 | 2046 | |
| 42 | Rubén Martínez | .4459 | 2021 | |
| 43 | Chris Maddox | .4457 | 2026 | |
| 44 | Ric Powell | .4449 | 2027 | |
| 45 | José Chávez | .4444 | 2021 | |
| 46 | Tony Hernández | .4442 | 2045 | |
| 47 | Ben Bergeron | .4439 | 2020 | |
| 48 | Jamie Thompson | .4436 | 2047 | |
| 49 | Dan Tobin | .4435 | 2048 | |
| 50 | Doug Graves | .4434 | 2034 | |
| 51 | Tomiji Y. Noda | .4430 | 2030 | |
| 52 | Dane Shirley | .4425 | 2052 | |
| 52 | José Garza | .4425 | 2049 | |
| 54 | Jonathan Roberts | .4419 | 2018 | |
| 55 | Don Woods | .4418 | 2044 | |
| 56 | José Gómez | .4415 | 2028 | |
| 56 | Jesús Franco | .4415 | 2037 | |
| 58 | Juan Quiñones | .4407 | 2052 | |
| 59 | Doug Becker | .4405 | 2017 | |
| 60 | Ron Dugas | .4402 | 2018 | |
| 61 | Greg Kennedy | .4396 | 2019 | |
| 62 | Bob Larson | .4395 | 2015 | |
| 63 | Cal Anderson | .4393 | 2018 | |
| 64 | Claude Cooke | .4390 | 2016 | |
| 65 | Héctor Garza | .4389 | 2024 | |
| 65 | Scot McFarland | .4389 | 2051 | |
| 65 | Jon Simpson | .4389 | 2034 | |
| 68 | Ken Foster | .4385 | 2053 | |
| 69 | Ben Bergeron | .4384 | 2021 | |
| 70 | Lou Bell | .4375 | 2023 | |
| 70 | Ika Kuahine | .4375 | 2022 | |
| 72 | Ryan Vonderharr# | .4374 | 2065 | |
| 72 | Ismael Gonzales# | .4374 | 2062 | |
| 74 | Juan Marino | .4373 | 2041 | |
| 75 | Chris Tillman# | .4370 | 2054 | |
| 76 | Juan Galló# | .4366 | 2051 | |
| 77 | Josh Albert | .4364 | 2021 | |
| 78 | Cristóbal Ruíz | .4361 | 2028 | |
| 79 | Erjan Oprel | .4358 | 2047 | |
| 80 | Tai sun Hsueh | .4357 | 2053 | |
| 80 | Davide Ruspoli# | .4357 | 2064 | |
| 82 | José Gómez | .4356 | 2027 | |
| 83 | Ron Davis | .4354 | 2041 | |
| 84 | Bernard Foijens | .4353 | 2030 | |
| 85 | José Mendoza | .4349 | 2045 | |
| 85 | Bob McCrary | .4349 | 2048 | |
| 87 | Jorge Marrero | .4343 | 2028 | |
| 88 | Thierry Gras# | .4342 | 2058 | |
| 89 | Mike Dunfee# | .4335 | 2061 | |
| 90 | Chris Reed | .4333 | 2023 | |
| 91 | Tony Guerrero | .4330 | 2021 | |
| 92 | Matthew Soria# | .4328 | 2062 | |
| 93 | Luis Ventura | .4325 | 2049 | |
| 94 | Christophe Legrand# | .4320 | 2062 | |
| 94 | Stu Jones | .4320 | 2027 | |
| 96 | Mike Cobb# | .4319 | 2054 | |
| 96 | Kazuhiko Nakashima | .4319 | 2039 | |
| 98 | Pjotr Kramer# | .4318 | 2063 | |
| 99 | Juan Rodríguez | .4316 | 2036 | |
| 99 | Guenther Gandler# | .4316 | 2050 |
