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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Diego Bonilla# | 1.093 | 2022 | |
| 2 | Jud Regan# | 1.087 | 2026 | |
| 3 | Joseph Antoine# | 1.081 | 2030 | |
| 4 | Alberto Rodríguez | 1.080 | 2024 | |
| 5 | Serious Lee# | 1.072 | 2030 | |
| 5 | Aaron Taylor | 1.072 | 2022 | |
| 7 | Diego Bonilla# | 1.068 | 2023 | |
| 8 | Derrek Conklin# | 1.066 | 2023 | |
| 9 | Colin Worthington# | 1.063 | 2025 | |
| 10 | Carroll Martin# | 1.061 | 2021 | |
| 10 | Andrés Escobar# | 1.061 | 2024 | |
| 10 | Enrique Vásquez# | 1.061 | 2025 | |
| 13 | Alberto Rodríguez | 1.060 | 2022 | |
| 14 | Damien Medforth | 1.054 | 2027 | |
| 14 | Robinson Barquero# | 1.054 | 2027 | |
| 16 | Armando Rodríguez# | 1.052 | 2027 | |
| 16 | Sidney Mackell# | 1.052 | 2028 | |
| 18 | Miguel Montoya# | 1.051 | 2025 | |
| 19 | Sidney Mackell# | 1.050 | 2029 | |
| 20 | Bartolo Sierra# | 1.047 | 2029 | |
| 21 | Andrés Escobar# | 1.046 | 2026 | |
| 22 | Harrison Jones | 1.044 | 2020 | |
| 23 | Jorge Maestas | 1.043 | 2020 | |
| 23 | Darrell Terwey# | 1.043 | 2020 | |
| 25 | Robinson Barquero# | 1.042 | 2026 | |
| 26 | Yoichibei Chikafuji# | 1.040 | 2029 | |
| 27 | Ralph Cranford# | 1.039 | 2026 | |
| 27 | Jimmy Fick# | 1.039 | 2030 | |
| 27 | Héctor Ruíz# | 1.039 | 2021 | |
| 30 | Yves Girard# | 1.036 | 2029 | |
| 31 | Jorge Reyes# | 1.030 | 2021 | |
| 32 | Lloyd Walsh | 1.029 | 2022 | |
| 32 | Sidney Mackell# | 1.029 | 2027 | |
| 32 | Jing-sheng Joo# | 1.029 | 2026 | |
| 35 | Spartak Gonjarov# | 1.028 | 2030 | |
| 36 | Javier Cordero# | 1.027 | 2030 | |
| 37 | Robinson Barquero# | 1.026 | 2028 | |
| 38 | Will Boyle | 1.025 | 2023 | |
| 39 | Vernon T. Waldrip# | 1.020 | 2027 | |
| 40 | Cristo Cuervo# | 1.019 | 2030 | |
| 40 | Santiago Valentín# | 1.019 | 2030 | |
| 42 | Carlos Trujillo# | 1.018 | 2020 | |
| 42 | Ramón Rivera# | 1.018 | 2020 | |
| 44 | António Ramírez# | 1.017 | 2025 | |
| 45 | Alex Vaske# | 1.014 | 2025 | |
| 46 | Dennis Barraclough# | 1.013 | 2026 | |
| 47 | Manuel Ramos# | 1.012 | 2028 | |
| 47 | Larry van Rey | 1.012 | 2023 | |
| 47 | Vernon T. Waldrip# | 1.012 | 2028 | |
| 47 | Lloyd Walsh | 1.012 | 2021 | |
| 51 | Wu-shun Chu# | 1.010 | 2028 | |
| 52 | Shohei Kiyomizu# | 1.009 | 2022 | |
| 53 | Giobbe Bastedo# | 1.008 | 2029 | |
| 54 | Shawn McCormack | 1.007 | 2021 | |
| 54 | Michael Cochran# | 1.007 | 2028 | |
| 56 | Bert Cook# | 1.004 | 2024 | |
| 57 | Tomás Mejía | 1.003 | 2022 | |
| 57 | Quentin Harrop# | 1.003 | 2030 | |
| 59 | Wagaw Lukongolo# | 1.001 | 2028 | |
| 60 | Luis Gutiérrez# | 0.999 | 2021 | |
| 60 | Manuel Ramos# | 0.999 | 2027 | |
| 62 | Jing-sheng Joo# | 0.997 | 2025 | |
| 63 | Rudko Hrnjak# | 0.995 | 2024 | |
| 64 | Sancho Romero# | 0.994 | 2020 | |
| 65 | Lloyd Walsh | 0.993 | 2023 | |
| 66 | Dave Yates# | 0.991 | 2025 | |
| 67 | Aaron Taylor | 0.990 | 2023 | |
| 67 | César Ramos# | 0.990 | 2029 | |
| 67 | Lance Antle# | 0.990 | 2027 | |
| 70 | Spartak Gonjarov# | 0.987 | 2029 | |
| 71 | Jesús Vargas# | 0.985 | 2026 | |
| 72 | Santiago Valentín# | 0.984 | 2029 | |
| 72 | Michael Landry# | 0.984 | 2020 | |
| 74 | Tomás Morán | 0.983 | 2021 | |
| 75 | Randy Schlosser# | 0.982 | 2022 | |
| 76 | Bobby Butterfield# | 0.980 | 2025 | |
| 77 | Filip Huigen# | 0.977 | 2024 | |
| 77 | Bobby Butterfield# | 0.977 | 2024 | |
| 79 | Sinfronio Vitor# | 0.971 | 2029 | |
| 80 | Logan Namajunas# | 0.960 | 2024 | |
| 81 | Jesús Vargas# | 0.953 | 2025 | |
| 81 | Gabrio Campoverde# | 0.953 | 2023 | |
| 83 | Mario Jacome# | 0.949 | 2028 | |
| 84 | Rand McNally# | 0.948 | 2028 | |
| 85 | José Hernández# | 0.945 | 2022 | |
| 86 | Mario Jacome# | 0.938 | 2027 | |
| 87 | Mario Jacome# | 0.934 | 2026 | |
| 88 | Trent Burch# | 0.933 | 2020 | |
| 89 | Dennis Barraclough# | 0.928 | 2025 | |
| 90 | Trent Burch# | 0.920 | 2021 |
