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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 | Eisse van Opdorp# | .3977 | 2043 | |
| 18 | Ethan Duffy# | .3965 | 2049 | |
| 19 | Noel Ballard* | .3928 | 2030 | |
| 20 | Juan Cabrera | .3927 | 2026 | |
| 21 | Gerald Shaw | .3916 | 2013 | |
| 22 | Ethan Duffy# | .3910 | 2050 | |
| 23 | Xavier Hernández | .3907 | 2033 | |
| 24 | Edward Sterrenburg | .3890 | 2036 | |
| 25 | Jaime Soto# | .3884 | 2044 | |
| 26 | Mario Castillo | .3830 | 2045 | |
| 27 | Ki-tak Im | .3827 | 2025 | |
| 28 | Max Bortenschlager | .3826 | 2040 | |
| 29 | Eiji Suzuki | .3823 | 2016 | |
| 30 | Max Bortenschlager | .3768 | 2041 | |
| 31 | Mario Castillo | .3764 | 2039 | |
| 32 | Jaime Soto# | .3763 | 2043 | |
| 33 | John Hill | .3758 | 2018 | |
| 34 | Noel Ballard* | .3757 | 2029 | |
| 35 | Nuygen Vuong | .3717 | 2036 | |
| 36 | Tamasaburo Kato* | .3713 | 2029 | |
| 37 | Xavier Hernández | .3708 | 2036 | |
| 38 | Gerrie Bond | .3685 | 2039 | |
| 39 | Nobuhisa Murakami | .3684 | 2036 | |
| 40 | Ki-tak Im | .3677 | 2026 | |
| 41 | Mario Castillo | .3673 | 2036 | |
| 41 | Ethan Duffy# | .3673 | 2048 | |
| 43 | Andrés Rodríguez | .3670 | 2022 | |
| 44 | Xavier Hernández | .3666 | 2032 | |
| 45 | Da-xia Hui# | .3663 | 2049 | |
| 46 | Melvin Thomas | .3662 | 2044 | |
| 47 | Colt Cabana | .3661 | 2034 | |
| 48 | Bob Campbell | .3648 | 2016 | |
| 49 | Takeru Sanu | .3638 | 2018 | |
| 49 | Yoshio Matsuo | .3638 | 2020 | |
| 51 | Dídac Nores# | .3634 | 2046 | |
| 51 | Blaine Bell | .3634 | 2014 | |
| 53 | Jesús Torres | .3622 | 2037 | |
| 54 | Jesús Torres | .3616 | 2038 | |
| 55 | Nelson Jaramillo | .3615 | 2040 | |
| 56 | Juan Cabrera | .3614 | 2024 | |
| 57 | Blaze Alexander | .3610 | 2035 | |
| 58 | Jorge Alejándrez* | .3607 | 2030 | |
| 59 | Ki-tak Im | .3604 | 2030 | |
| 60 | Brent Gaines | .3596 | 2013 | |
| 61 | Pil-joong Pak | .3595 | 2028 | |
| 62 | Nelson Jaramillo | .3580 | 2034 | |
| 63 | Mario Castillo | .3576 | 2037 | |
| 64 | Mario Castillo | .3573 | 2034 | |
| 65 | Nobuhisa Murakami | .3570 | 2037 | |
| 66 | Dídac Nores# | .3567 | 2045 | |
| 67 | Datu Lesaca | .3557 | 2037 | |
| 68 | Roland Deschain | .3553 | 2031 | |
| 69 | Mario Castillo | .3551 | 2038 | |
| 69 | Gerald Shaw | .3551 | 2014 | |
| 69 | Juanito González | .3551 | 2035 | |
| 72 | Takeru Sanu | .3548 | 2019 | |
| 73 | Roland Deschain | .3545 | 2034 | |
| 74 | Jorge Alejándrez* | .3531 | 2033 | |
| 75 | Dejmi Dumervil | .3524 | 2041 | |
| 76 | Jaime Soto# | .3521 | 2045 | |
| 77 | Terumoto Kurihara | .3511 | 2027 | |
| 78 | Leonard O'Connor | .3510 | 2018 | |
| 79 | Jaime Soto# | .3508 | 2042 | |
| 80 | Nelson Jaramillo | .3500 | 2031 | |
| 81 | Ethan Duffy# | .3497 | 2051 | |
| 82 | Dídac Nores# | .3489 | 2047 | |
| 83 | Colt Cabana | .3486 | 2033 | |
| 84 | Kimi Okubo | .3484 | 2036 | |
| 85 | Bob Dickerson | .3469 | 2023 | |
| 86 | Datu Lesaca | .3468 | 2038 | |
| 87 | Chip Teague | .3456 | 2013 | |
| 88 | Bob Heller | .3452 | 2021 | |
| 89 | Tony Romero | .3441 | 2030 | |
| 90 | Philippe Parmentier | .3440 | 2013 | |
| 91 | Juan Neváres# | .3433 | 2046 | |
| 92 | Ángel Saelices# | .3431 | 2048 | |
| 93 | Nelson Jaramillo | .3428 | 2033 | |
| 94 | Melito Báez | .3425 | 2032 | |
| 95 | Datu Lesaca | .3423 | 2036 | |
| 96 | Bob Campbell | .3419 | 2015 | |
| 97 | Mario Castillo | .3416 | 2042 | |
| 98 | Bob Heller | .3414 | 2019 | |
| 99 | Micah Coffey | .3411 | 2027 | |
| 100 | Bruce Ingilby | .3408 | 2029 |
