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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Myron Rosenbalm# | .4432 | 2030 | |
| 2 | Shojiro Ueda# | .4416 | 2023 | |
| 3 | Jeff Rutherford# | .4413 | 2023 | |
| 4 | Pedro Colón# | .4374 | 2030 | |
| 5 | Fred Meyer | .4279 | 2023 | |
| 6 | Bob Maher# | .4195 | 2028 | |
| 7 | Pepe Reyes | .4169 | 2025 | |
| 8 | Marcos Roa# | .4157 | 2027 | |
| 9 | Roberto Sánchez# | .4122 | 2023 | |
| 10 | Alejandro Santiago# | .4104 | 2029 | |
| 11 | Ricardo Pacheco# | .4046 | 2024 | |
| 12 | Lupo Cotto# | .4044 | 2025 | |
| 13 | Vincent Klein# | .4038 | 2030 | |
| 14 | Lowell Moon# | .4037 | 2027 | |
| 15 | Marcel Roks# | .4024 | 2032 | |
| 16 | Christian Blair# | .4018 | 2022 | |
| 17 | José Ortega | .3972 | 2022 | |
| 18 | Andrew Hall | .3914 | 2023 | |
| 19 | Scott Britt | .3913 | 2023 | |
| 20 | Pedro Reyes# | .3898 | 2032 | |
| 21 | Cory Hansen | .3872 | 2020 | |
| 22 | Scott Ramsey# | .3867 | 2028 | |
| 23 | Mike Cook# | .3793 | 2022 | |
| 24 | Eddie Sachs# | .3776 | 2030 | |
| 25 | Myron Rosenbalm# | .3764 | 2029 | |
| 26 | Jesús Reyes# | .3730 | 2020 | |
| 27 | Octávio Zúńiga | .3676 | 2021 | |
| 28 | Miguel Juárez | .3663 | 2020 | |
| 29 | Rubén Alvarado# | .3625 | 2024 | |
| 30 | Alfredo Sánchez# | .3621 | 2031 | |
| 31 | Dawit Lihalakha# | .3606 | 2026 | |
| 32 | John Thompson | .3557 | 2024 | |
| 32 | Chong-yee Au-Yong# | .3557 | 2032 | |
| 34 | Ted Tullo# | .3551 | 2031 | |
| 35 | Alejandro Garza# | .3547 | 2029 | |
| 36 | Octávio Zúńiga | .3544 | 2022 | |
| 37 | Abraham Phelps# | .3543 | 2030 | |
| 38 | Francisco Guerra# | .3526 | 2031 | |
| 39 | Gerald Merendino | .3500 | 2029 | |
| 40 | Jason Potter | .3488 | 2025 | |
| 41 | Ricardo Franco | .3480 | 2023 | |
| 42 | Paco Vásquez | .3475 | 2023 | |
| 43 | Jayden Laming# | .3473 | 2031 | |
| 44 | Ken Bone# | .3436 | 2028 | |
| 45 | José Zarate# | .3424 | 2027 | |
| 46 | Takayuki Yoshikawa# | .3423 | 2030 | |
| 47 | Lúcio López# | .3421 | 2020 | |
| 48 | Alfredo Chávez | .3401 | 2022 | |
| 48 | Marcos Costa# | .3401 | 2028 | |
| 50 | José Bravo | .3374 | 2022 | |
| 51 | Mun-wah Law# | .3357 | 2032 | |
| 52 | Jorge Gómez# | .3356 | 2030 | |
| 53 | Takayuki Yoshikawa# | .3349 | 2031 | |
| 54 | António Zúńiga# | .3343 | 2028 | |
| 55 | Phil Dougherty# | .3341 | 2026 | |
| 56 | Carlos González# | .3333 | 2028 | |
| 56 | Juan Chávez# | .3333 | 2027 | |
| 58 | Raymond Dudzinski# | .3324 | 2031 | |
| 59 | Brent van Schoonhoven# | .3319 | 2025 | |
| 60 | Luis Sáenz | .3294 | 2021 | |
| 61 | Keizo Morishita# | .3291 | 2032 | |
| 62 | Alonso Zamora | .3274 | 2027 | |
| 63 | Alfredo Chávez | .3255 | 2021 | |
| 64 | Fernando Trinidad | .3208 | 2027 | |
| 65 | Preston Hernández# | .3191 | 2024 | |
| 65 | José Rodríguez | .3191 | 2021 | |
| 67 | Sven Spee# | .3189 | 2029 | |
| 68 | Paco Vásquez | .3175 | 2022 | |
| 69 | José Estrada | .3158 | 2021 | |
| 70 | Tyler Knopp# | .3147 | 2031 | |
| 71 | Alfredo Sánchez# | .3134 | 2026 | |
| 72 | José Vázquez# | .3072 | 2023 | |
| 73 | José Rodríguez | .3071 | 2020 | |
| 74 | Luis Tapia# | .3050 | 2021 | |
| 75 | Armando Romero# | .3008 | 2031 | |
| 76 | Marcos Costa# | .3003 | 2032 | |
| 77 | Juan Rivera# | .2982 | 2026 | |
| 78 | Ron Coffman# | .2966 | 2026 | |
| 79 | José Estrada | .2881 | 2020 | |
| 80 | Alonso Zamora | .2853 | 2028 |
