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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Thom Wilcox* | .4930 | 2019 | |
| 2 | Thom Wilcox* | .4897 | 2017 | |
| 3 | Thom Wilcox* | .4686 | 2020 | |
| 4 | Thom Wilcox* | .4652 | 2018 | |
| 5 | Noel Ballard | .4614 | 2023 | |
| 6 | Thom Wilcox* | .4481 | 2013 | |
| 7 | Noel Ballard | .4406 | 2021 | |
| 8 | Thom Wilcox* | .4369 | 2021 | |
| 9 | Noel Ballard | .4267 | 2020 | |
| 10 | Noel Ballard | .4232 | 2022 | |
| 11 | Noel Ballard | .4229 | 2024 | |
| 12 | Tamasaburo Kato# | .4193 | 2023 | |
| 13 | Tamasaburo Kato# | .4140 | 2027 | |
| 14 | Tamasaburo Kato# | .3996 | 2022 | |
| 15 | Robert Shelby | .3988 | 2016 | |
| 16 | Terry Armstrong | .3984 | 2022 | |
| 17 | Terry Armstrong | .3937 | 2021 | |
| 18 | Noel Ballard | .3928 | 2030 | |
| 19 | Juan Cabrera | .3927 | 2026 | |
| 20 | Gerald Shaw | .3916 | 2013 | |
| 21 | Xavier Hernández# | .3907 | 2033 | |
| 22 | Edward Sterrenburg# | .3890 | 2036 | |
| 23 | Ki-tak Im | .3827 | 2025 | |
| 24 | Eiji Suzuki | .3823 | 2016 | |
| 25 | John Hill | .3758 | 2018 | |
| 26 | Noel Ballard | .3757 | 2029 | |
| 27 | Nuygen Vuong# | .3717 | 2036 | |
| 28 | Tamasaburo Kato# | .3713 | 2029 | |
| 29 | Xavier Hernández# | .3708 | 2036 | |
| 30 | Nobuhisa Murakami# | .3684 | 2036 | |
| 31 | Ki-tak Im | .3677 | 2026 | |
| 32 | Mario Castillo# | .3673 | 2036 | |
| 33 | Andrés Rodríguez | .3670 | 2022 | |
| 34 | Xavier Hernández# | .3666 | 2032 | |
| 35 | Colt Cabana | .3661 | 2034 | |
| 36 | Bob Campbell | .3648 | 2016 | |
| 37 | Takeru Sanu | .3638 | 2018 | |
| 37 | Yoshio Matsuo | .3638 | 2020 | |
| 39 | Blaine Bell | .3634 | 2014 | |
| 40 | Jesús Torres# | .3622 | 2037 | |
| 41 | Juan Cabrera | .3614 | 2024 | |
| 42 | Blaze Alexander# | .3610 | 2035 | |
| 43 | Jorge Alejándrez# | .3607 | 2030 | |
| 44 | Ki-tak Im | .3604 | 2030 | |
| 45 | Brent Gaines | .3596 | 2013 | |
| 46 | Pil-joong Pak | .3595 | 2028 | |
| 47 | Nelson Jaramillo# | .3580 | 2034 | |
| 48 | Mario Castillo# | .3576 | 2037 | |
| 49 | Mario Castillo# | .3573 | 2034 | |
| 50 | Nobuhisa Murakami# | .3570 | 2037 | |
| 51 | Datu Lesaca# | .3557 | 2037 | |
| 52 | Roland Deschain# | .3553 | 2031 | |
| 53 | Gerald Shaw | .3551 | 2014 | |
| 53 | Juanito González# | .3551 | 2035 | |
| 55 | Takeru Sanu | .3548 | 2019 | |
| 56 | Roland Deschain# | .3545 | 2034 | |
| 57 | Jorge Alejándrez# | .3531 | 2033 | |
| 58 | Terumoto Kurihara | .3511 | 2027 | |
| 59 | Leonard O'Connor | .3510 | 2018 | |
| 60 | Nelson Jaramillo# | .3500 | 2031 | |
| 61 | Colt Cabana | .3486 | 2033 | |
| 62 | Kimi Okubo# | .3484 | 2036 | |
| 63 | Bob Dickerson | .3469 | 2023 | |
| 64 | Chip Teague | .3456 | 2013 | |
| 65 | Bob Heller | .3452 | 2021 | |
| 66 | Tony Romero# | .3441 | 2030 | |
| 67 | Philippe Parmentier | .3440 | 2013 | |
| 68 | Nelson Jaramillo# | .3428 | 2033 | |
| 69 | Melito Báez# | .3425 | 2032 | |
| 70 | Datu Lesaca# | .3423 | 2036 | |
| 71 | Bob Campbell | .3419 | 2015 | |
| 72 | Bob Heller | .3414 | 2019 | |
| 73 | Micah Coffey | .3411 | 2027 | |
| 74 | Bruce Ingilby | .3408 | 2029 | |
| 75 | Bob Heller | .3400 | 2018 | |
| 76 | Armando Alvarado | .3399 | 2028 | |
| 76 | Ramón Garmendia# | .3399 | 2036 | |
| 78 | Roland Deschain# | .3396 | 2033 | |
| 79 | Francisco González | .3392 | 2014 | |
| 79 | Brent Gaines | .3392 | 2014 | |
| 81 | Ki-tak Im | .3390 | 2029 | |
| 81 | Robert Shelby | .3390 | 2017 | |
| 83 | Travis Newsome | .3378 | 2026 | |
| 84 | Bob Campbell | .3374 | 2017 | |
| 85 | Tim Barnes | .3371 | 2025 | |
| 86 | Juan Cabrera | .3369 | 2027 | |
| 87 | Edward Sterrenburg# | .3354 | 2035 | |
| 88 | Francisco González | .3341 | 2015 | |
| 89 | Tim Barnes | .3333 | 2019 | |
| 89 | Bob Heller | .3333 | 2017 | |
| 89 | Micah Coffey | .3333 | 2031 | |
| 92 | Tony Romero# | .3326 | 2026 | |
| 92 | Bernardo Herrera | .3326 | 2026 | |
| 92 | Tamasaburo Kato# | .3326 | 2032 | |
| 92 | Travis Newsome | .3326 | 2023 | |
| 96 | Jorge Trevino | .3312 | 2022 | |
| 97 | Júlio Castillo | .3309 | 2016 | |
| 98 | Stuart Newton | .3308 | 2013 | |
| 99 | Terumoto Kurihara | .3306 | 2031 | |
| 100 | Pedro Vázquez | .3297 | 2026 |
