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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 | Joe Karnowski# | .4129 | 2036 | |
| 10 | Roberto Sánchez# | .4122 | 2023 | |
| 11 | Alejandro Santiago | .4104 | 2029 | |
| 12 | Qing-nian Zexian# | .4087 | 2034 | |
| 13 | Mike Sanderson# | .4068 | 2035 | |
| 14 | Raphaël Duval# | .4058 | 2035 | |
| 15 | Ricardo Pacheco | .4046 | 2024 | |
| 16 | Lauren Hilfiker# | .4044 | 2036 | |
| 16 | Lupo Cotto# | .4044 | 2025 | |
| 18 | Vincent Klein | .4038 | 2030 | |
| 19 | Lowell Moon | .4037 | 2027 | |
| 20 | Marcel Roks# | .4024 | 2032 | |
| 21 | Christian Blair | .4018 | 2022 | |
| 22 | José Ortega | .3972 | 2022 | |
| 23 | Andrew Hall | .3914 | 2023 | |
| 24 | Scott Britt | .3913 | 2023 | |
| 25 | Pedro Reyes# | .3898 | 2032 | |
| 26 | Cory Hansen | .3872 | 2020 | |
| 27 | Scott Ramsey# | .3867 | 2028 | |
| 28 | Howard Lee | .3846 | 2034 | |
| 28 | Chong-yee Au-Yong | .3846 | 2033 | |
| 28 | Dan Chrzan# | .3846 | 2033 | |
| 31 | Mike Cook | .3793 | 2022 | |
| 32 | Bill Chaundler# | .3788 | 2033 | |
| 33 | Greg Bugarin# | .3787 | 2034 | |
| 34 | Dean Jackson# | .3784 | 2035 | |
| 35 | Eddie Sachs# | .3776 | 2030 | |
| 36 | Myron Rosenbalm# | .3764 | 2029 | |
| 37 | Ezequiel Oacia# | .3758 | 2036 | |
| 38 | Jesús Reyes | .3730 | 2020 | |
| 39 | Francisco Vargas# | .3722 | 2035 | |
| 40 | Domingo Trujillo# | .3681 | 2035 | |
| 41 | Octávio Zúńiga | .3676 | 2021 | |
| 42 | Miguel Juárez | .3663 | 2020 | |
| 43 | Armando Pacheco | .3630 | 2033 | |
| 44 | Rubén Alvarado | .3625 | 2024 | |
| 45 | Alfredo Sánchez | .3621 | 2031 | |
| 46 | Dawit Lihalakha | .3606 | 2026 | |
| 47 | Carlos Rodríguez# | .3604 | 2034 | |
| 48 | John Thompson | .3557 | 2024 | |
| 48 | Chong-yee Au-Yong | .3557 | 2032 | |
| 50 | Ted Tullo | .3551 | 2031 | |
| 51 | Alejandro Garza | .3547 | 2029 | |
| 52 | Octávio Zúńiga | .3544 | 2022 | |
| 53 | Abraham Phelps | .3543 | 2030 | |
| 54 | Francisco Guerra | .3526 | 2031 | |
| 55 | Gerald Merendino | .3500 | 2029 | |
| 56 | Jason Potter | .3488 | 2025 | |
| 57 | Shelby Loudenslager | .3485 | 2033 | |
| 58 | Ricardo Franco | .3480 | 2023 | |
| 59 | Paco Vásquez | .3475 | 2023 | |
| 60 | Jayden Laming# | .3473 | 2031 | |
| 61 | Jihan Tuah# | .3440 | 2035 | |
| 62 | Ken Bone# | .3436 | 2028 | |
| 63 | José Zarate# | .3424 | 2027 | |
| 64 | Takayuki Yoshikawa# | .3423 | 2030 | |
| 65 | Lúcio López | .3421 | 2020 | |
| 66 | Alfredo Chávez | .3401 | 2022 | |
| 66 | Marcos Costa | .3401 | 2028 | |
| 68 | Bryan Decker# | .3397 | 2036 | |
| 69 | Jihan Tuah# | .3385 | 2034 | |
| 70 | José Bravo | .3374 | 2022 | |
| 71 | Jason Slaybaugh# | .3364 | 2033 | |
| 72 | Mun-wah Law# | .3357 | 2032 | |
| 73 | Jorge Gómez | .3356 | 2030 | |
| 74 | José Medina | .3354 | 2034 | |
| 75 | Pedro Serano# | .3350 | 2036 | |
| 76 | Takayuki Yoshikawa# | .3349 | 2031 | |
| 77 | António Zúńiga | .3343 | 2028 | |
| 78 | Phil Dougherty | .3341 | 2026 | |
| 79 | Juan Chávez# | .3333 | 2027 | |
| 79 | Carlos González# | .3333 | 2028 | |
| 81 | Raymond Dudzinski# | .3324 | 2031 | |
| 82 | Brent van Schoonhoven | .3319 | 2025 | |
| 83 | Luis Sáenz | .3294 | 2021 | |
| 84 | Keizo Morishita# | .3291 | 2032 | |
| 85 | Alonso Zamora | .3274 | 2027 | |
| 86 | Alfredo Chávez | .3255 | 2021 | |
| 87 | Fernando Trinidad | .3208 | 2027 | |
| 88 | José Rodríguez | .3191 | 2021 | |
| 88 | Preston Hernández | .3191 | 2024 | |
| 90 | Sven Spee | .3189 | 2029 | |
| 91 | Paco Vásquez | .3175 | 2022 | |
| 92 | Miklos Elias | .3168 | 2035 | |
| 93 | José Estrada | .3158 | 2021 | |
| 94 | Tyler Knopp# | .3147 | 2031 | |
| 95 | Alfredo Sánchez | .3134 | 2026 | |
| 96 | Shigeaki Samurakami# | .3116 | 2034 | |
| 97 | José Vázquez | .3072 | 2023 | |
| 98 | José Rodríguez | .3071 | 2020 | |
| 99 | Luis Tapia | .3050 | 2021 | |
| 100 | Armando Romero | .3008 | 2031 |
