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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Lenny Roper | 1.115 | 2026 | |
| 1 | Aurelio Costello | 1.115 | 2021 | |
| 3 | Sergio Delgado | 1.089 | 2023 | |
| 4 | Marcos Alfaro# | 1.088 | 2029 | |
| 5 | Jackson Shewman | 1.082 | 2020 | |
| 6 | Nelson Plasenia | 1.068 | 2021 | |
| 7 | Bob Curry# | 1.067 | 2023 | |
| 8 | Luis Guerrero# | 1.066 | 2027 | |
| 8 | D.C. Aiken | 1.066 | 2024 | |
| 10 | Dan Hart | 1.064 | 2026 | |
| 11 | Jason Mann | 1.061 | 2023 | |
| 12 | Jorge Gómez# | 1.058 | 2027 | |
| 13 | Octávio Ontiveros# | 1.055 | 2030 | |
| 14 | António Padilla# | 1.051 | 2022 | |
| 14 | Nelson Plasenia | 1.051 | 2025 | |
| 14 | Luis Guerrero# | 1.051 | 2028 | |
| 14 | Larry Brown | 1.051 | 2022 | |
| 18 | Dan Hart | 1.049 | 2025 | |
| 18 | Dave Young | 1.049 | 2020 | |
| 20 | Dave Young | 1.048 | 2021 | |
| 21 | Júlio López | 1.046 | 2020 | |
| 22 | Roberto Aguirre# | 1.045 | 2030 | |
| 22 | Nelson Plasenia | 1.045 | 2024 | |
| 22 | Iván Chacón# | 1.045 | 2024 | |
| 25 | Bob Curry# | 1.044 | 2022 | |
| 26 | Rodrigo Gómez# | 1.042 | 2028 | |
| 27 | Albert Covington# | 1.041 | 2028 | |
| 28 | Britt Lynch# | 1.038 | 2026 | |
| 29 | Nelson Plasenia | 1.037 | 2020 | |
| 30 | Bill Perkins# | 1.036 | 2031 | |
| 30 | Jack Bell | 1.036 | 2022 | |
| 32 | Kade Knowles# | 1.035 | 2028 | |
| 33 | Luis Guerrero# | 1.034 | 2029 | |
| 33 | Alfredo López | 1.034 | 2022 | |
| 35 | Marcos Alfaro# | 1.033 | 2028 | |
| 36 | Iván Chacón# | 1.032 | 2026 | |
| 36 | Iván Chacón# | 1.032 | 2025 | |
| 38 | Octávio Ontiveros# | 1.031 | 2031 | |
| 39 | Roberto De La Cruz# | 1.030 | 2023 | |
| 40 | Leon Carlisle# | 1.028 | 2030 | |
| 40 | Jenkins Hall | 1.028 | 2025 | |
| 42 | Jorge Arreola# | 1.025 | 2030 | |
| 42 | Cale Beazley | 1.025 | 2021 | |
| 44 | Lorenzo Rosas# | 1.024 | 2025 | |
| 45 | Shiki Sanu# | 1.023 | 2028 | |
| 46 | Javier Marino# | 1.022 | 2027 | |
| 47 | David Meléndez# | 1.020 | 2030 | |
| 48 | Mason Congdon# | 1.017 | 2031 | |
| 49 | Carl Tucker# | 1.011 | 2029 | |
| 50 | Juan Capmany# | 1.010 | 2030 | |
| 51 | Gil Simmons# | 1.009 | 2029 | |
| 52 | Dave Young | 1.008 | 2023 | |
| 53 | Ramón Ávila | 1.007 | 2026 | |
| 54 | Javier Chávez# | 1.005 | 2022 | |
| 55 | Rodrigo Gómez# | 1.002 | 2029 | |
| 55 | Dave Young | 1.002 | 2024 | |
| 55 | Andrés Medina# | 1.002 | 2028 | |
| 58 | Aurelio Costello | 1.001 | 2024 | |
| 59 | Willie Brown | 1.000 | 2023 | |
| 59 | José de la Cavallería# | 1.000 | 2031 | |
| 59 | Craig Tricket# | 1.000 | 2030 | |
| 59 | Alexis Smeddon | 1.000 | 2020 | |
| 63 | Wade Killefer# | 0.999 | 2029 | |
| 64 | Stefan Vanderhoof# | 0.998 | 2027 | |
| 65 | Dave Young | 0.996 | 2022 | |
| 66 | Luis Aragón# | 0.994 | 2027 | |
| 67 | Jorge Arreola# | 0.992 | 2023 | |
| 67 | Breanainn Swartwood# | 0.992 | 2029 | |
| 69 | Carl Tucker# | 0.986 | 2028 | |
| 70 | Darby Carveth | 0.985 | 2023 | |
| 71 | Andrés Medina# | 0.984 | 2027 | |
| 72 | Carl Tucker# | 0.982 | 2031 | |
| 72 | Micheal Lovell# | 0.982 | 2030 | |
| 74 | Vincent Vega# | 0.978 | 2025 | |
| 75 | Víctor Hernández | 0.977 | 2024 | |
| 76 | Bryce Bancroft# | 0.976 | 2024 | |
| 76 | Dave Young | 0.976 | 2025 | |
| 78 | Jon Baxter# | 0.974 | 2025 | |
| 79 | Davis Anderson | 0.969 | 2023 | |
| 80 | Noël Sassetti# | 0.967 | 2028 | |
| 80 | Kade Knowles# | 0.967 | 2021 | |
| 82 | Christian Gentry# | 0.966 | 2029 | |
| 83 | Alex Mable# | 0.965 | 2029 | |
| 84 | Orlando López | 0.963 | 2022 | |
| 85 | Carl Tucker# | 0.955 | 2030 | |
| 86 | Noël Sassetti# | 0.934 | 2029 | |
| 87 | Mario Blanco# | 0.933 | 2023 | |
| 87 | Glenn Woods | 0.933 | 2020 | |
| 87 | Santiago Valentín# | 0.933 | 2031 | |
| 90 | Ted Cook# | 0.927 | 2022 | |
| 91 | Javier Luna# | 0.918 | 2027 | |
| 92 | Javier Robles# | 0.900 | 2021 | |
| 93 | Michael Brannon# | 0.898 | 2031 | |
| 94 | Álex Rodríguez | 0.895 | 2020 | |
| 94 | Javier Luna# | 0.895 | 2026 | |
| 96 | Bob Wilson | 0.894 | 2022 | |
| 97 | Kade Knowles# | 0.887 | 2020 | |
| 98 | Esteban Olivo# | 0.884 | 2028 | |
| 99 | Javier Robles# | 0.824 | 2023 |
