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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Luis Alomar# | 1.097 | 2024 | |
| 2 | Marcos Alfaro# | 1.095 | 2031 | |
| 2 | António Padilla# | 1.095 | 2028 | |
| 2 | Ernesto Souza# | 1.095 | 2028 | |
| 5 | Bill Dennis | 1.092 | 2022 | |
| 6 | Jung-hwan Kwon# | 1.087 | 2030 | |
| 6 | Ramón Cabral | 1.087 | 2025 | |
| 8 | Joaquín Reyes# | 1.082 | 2027 | |
| 9 | Luis Guerrero# | 1.078 | 2030 | |
| 10 | Marcos Deleón# | 1.074 | 2031 | |
| 11 | Ernesto Souza# | 1.066 | 2029 | |
| 11 | Ernesto Souza# | 1.066 | 2027 | |
| 11 | Fernando Martínez# | 1.066 | 2030 | |
| 14 | Bob Curry# | 1.060 | 2028 | |
| 15 | Alfredo Mojica# | 1.058 | 2029 | |
| 16 | Juan Martínez | 1.057 | 2020 | |
| 17 | Alfredo Mojica# | 1.055 | 2027 | |
| 17 | Shang-de Zhang# | 1.055 | 2024 | |
| 19 | Rob Gray# | 1.053 | 2028 | |
| 20 | Eddie O'Bryan# | 1.052 | 2029 | |
| 21 | Roberto Aguirre# | 1.051 | 2031 | |
| 22 | Vicente Pueblo# | 1.050 | 2030 | |
| 22 | Micheal Murdoch | 1.050 | 2023 | |
| 24 | Henry Womack | 1.047 | 2027 | |
| 25 | Kent Roberts | 1.043 | 2026 | |
| 26 | Carlos Gómez | 1.042 | 2022 | |
| 26 | Alfredo López | 1.042 | 2023 | |
| 28 | Jung-hwan Kwon# | 1.039 | 2029 | |
| 29 | Iván Chacón# | 1.036 | 2028 | |
| 29 | Dale Blair# | 1.036 | 2026 | |
| 31 | Bill Dennis | 1.034 | 2025 | |
| 31 | Phil Terry | 1.034 | 2021 | |
| 31 | Lorenzo Rosas# | 1.034 | 2030 | |
| 34 | Carlos Gómez | 1.033 | 2020 | |
| 35 | Ernesto Souza# | 1.031 | 2026 | |
| 36 | Bill Dennis | 1.030 | 2023 | |
| 36 | Corey Neace# | 1.030 | 2029 | |
| 38 | Lorenzo Rosas# | 1.026 | 2026 | |
| 39 | Lorenzo Rosas# | 1.023 | 2027 | |
| 40 | Fernando Martínez# | 1.022 | 2029 | |
| 41 | Emílio Barbán | 1.021 | 2023 | |
| 41 | David Ramírez | 1.021 | 2024 | |
| 41 | Elvis Larson | 1.021 | 2022 | |
| 41 | Alex Niemann# | 1.021 | 2031 | |
| 41 | David Sánchez# | 1.021 | 2025 | |
| 46 | Don MacNeilage | 1.020 | 2020 | |
| 47 | Alfredo Mojica# | 1.012 | 2028 | |
| 47 | Javier Chávez# | 1.012 | 2028 | |
| 49 | Jorge Pérez# | 1.011 | 2023 | |
| 50 | Bill Dennis | 1.008 | 2026 | |
| 51 | Javier Chávez# | 1.007 | 2023 | |
| 52 | Kent Roberts | 1.001 | 2025 | |
| 52 | Jim Lee | 1.001 | 2025 | |
| 54 | Michael Garrett# | 1.000 | 2031 | |
| 54 | Luis Costello | 1.000 | 2024 | |
| 56 | Louis Gibbons# | 0.999 | 2027 | |
| 57 | Monte Pollard | 0.996 | 2022 | |
| 58 | Javier Chávez# | 0.995 | 2030 | |
| 59 | Larry Brown | 0.994 | 2021 | |
| 59 | Julián De Paz# | 0.994 | 2029 | |
| 61 | Brian King | 0.993 | 2021 | |
| 62 | Jorge Féliz | 0.992 | 2022 | |
| 63 | Kade Knowles# | 0.991 | 2021 | |
| 64 | Bryce Bancroft# | 0.988 | 2029 | |
| 64 | Julián De Paz# | 0.988 | 2030 | |
| 66 | Yosuke Hayashi# | 0.982 | 2031 | |
| 67 | Tamasaburo Kato# | 0.979 | 2020 | |
| 68 | Ty Struck# | 0.975 | 2031 | |
| 69 | Kap-yong Chong | 0.963 | 2026 | |
| 69 | Eddie O'Bryan# | 0.963 | 2025 | |
| 71 | Chris Costa# | 0.955 | 2031 | |
| 72 | Roger Wheeler | 0.954 | 2022 | |
| 73 | Harrison Blackford | 0.949 | 2023 | |
| 74 | Michael Walker | 0.948 | 2027 | |
| 75 | Bryce Bancroft# | 0.944 | 2026 | |
| 76 | Homer Bell | 0.941 | 2020 | |
| 77 | Javier Rivera# | 0.935 | 2026 | |
| 77 | Gerjan de Best# | 0.935 | 2026 | |
| 79 | David Ramírez | 0.929 | 2023 | |
| 80 | Andrew Weeks# | 0.927 | 2029 | |
| 81 | Edgar Baeza# | 0.924 | 2030 | |
| 82 | Ben Anderson | 0.917 | 2022 | |
| 83 | Glenn Woods | 0.906 | 2024 | |
| 84 | Álex Rodríguez | 0.897 | 2024 | |
| 85 | Edgar Baeza# | 0.894 | 2029 | |
| 86 | Clarence Fox | 0.877 | 2028 | |
| 87 | Dale Blair# | 0.869 | 2025 | |
| 88 | Cristo González# | 0.827 | 2028 | |
| 89 | Cristo González# | 0.814 | 2027 | |
| 90 | Mike Strickland# | 0.779 | 2028 |
