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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Matt Hartnett | 1.101 | 2024 | |
| 2 | Arturo Maldonado# | 1.083 | 2027 | |
| 3 | Michael Landry# | 1.082 | 2027 | |
| 4 | Matt Hartnett | 1.081 | 2025 | |
| 5 | Markus Richardson# | 1.076 | 2023 | |
| 6 | Matt Hartnett | 1.072 | 2022 | |
| 7 | John Huff | 1.071 | 2023 | |
| 8 | Bryce Reilly# | 1.069 | 2026 | |
| 9 | Sergio Cortéz# | 1.066 | 2023 | |
| 10 | Hideki Hisanobu# | 1.064 | 2028 | |
| 11 | Bernardo Cruz | 1.063 | 2021 | |
| 12 | Arnie Latham | 1.062 | 2020 | |
| 13 | Matt Hartnett | 1.060 | 2023 | |
| 14 | Alex Maxwell# | 1.059 | 2027 | |
| 15 | Richard Younger# | 1.056 | 2028 | |
| 15 | Roberto Ríos# | 1.056 | 2022 | |
| 17 | Jim Harris | 1.054 | 2023 | |
| 18 | Roberto Maestas# | 1.052 | 2025 | |
| 18 | Alex Maxwell# | 1.052 | 2028 | |
| 20 | Carlos Carranza | 1.049 | 2021 | |
| 21 | Jesús González# | 1.044 | 2028 | |
| 22 | Jim Harris | 1.042 | 2022 | |
| 23 | Chae-hyeong Kim | 1.038 | 2022 | |
| 24 | Matt Hartnett | 1.034 | 2026 | |
| 25 | Álex Estrada# | 1.032 | 2024 | |
| 25 | Joseph Papasogli# | 1.032 | 2025 | |
| 27 | Cristo Ramírez | 1.023 | 2020 | |
| 28 | Barry Martínez | 1.022 | 2021 | |
| 28 | Álex Estrada# | 1.022 | 2025 | |
| 30 | Pedro Tapia# | 1.020 | 2027 | |
| 31 | Alfredo García# | 1.019 | 2026 | |
| 32 | Salvador Trevino# | 1.018 | 2026 | |
| 32 | Adam Hennessey | 1.018 | 2020 | |
| 34 | Bill Burgess | 1.012 | 2024 | |
| 35 | Alfredo García# | 1.011 | 2028 | |
| 36 | Enrique Sánchez# | 1.009 | 2028 | |
| 37 | Leonard James | 1.007 | 2024 | |
| 38 | Tom Potts | 0.998 | 2021 | |
| 38 | Sisto Pagnamenta# | 0.998 | 2028 | |
| 40 | Francisco Gonzáles | 0.990 | 2020 | |
| 40 | Jake Shelton# | 0.990 | 2022 | |
| 42 | Cristo Ramírez | 0.989 | 2022 | |
| 43 | Mal Cobb | 0.987 | 2020 | |
| 44 | Barry Martínez | 0.986 | 2020 | |
| 45 | Leonard James | 0.984 | 2025 | |
| 46 | Cristo Ramírez | 0.975 | 2024 | |
| 47 | Daniel Molina | 0.971 | 2020 | |
| 48 | Ignacio Medine# | 0.969 | 2028 | |
| 49 | Luis Vicenteno# | 0.965 | 2026 | |
| 50 | Jeffery Campbell# | 0.961 | 2021 | |
| 50 | Johnny Foster | 0.961 | 2023 | |
| 52 | Jim Coffey | 0.955 | 2020 | |
| 53 | Cristo Ramírez | 0.948 | 2023 | |
| 54 | Juan Valdéz | 0.947 | 2021 | |
| 55 | Juan Rodríguez | 0.938 | 2023 | |
| 56 | Ignacio Medine# | 0.932 | 2027 | |
| 57 | Augusto Rocha# | 0.926 | 2025 | |
| 58 | Christian O'Neal | 0.902 | 2022 | |
| 59 | Luis Vicenteno# | 0.898 | 2028 | |
| 60 | Bill Becker | 0.894 | 2024 | |
| 61 | Mike Greene# | 0.890 | 2025 | |
| 62 | Robert Bond | 0.885 | 2020 | |
| 63 | José Rivera# | 0.830 | 2027 |
