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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | IP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jon Erickson | 3995.0 | 2020-2028 | |
| 2 | Roberto Soto# | 3595.1 | 2026-2038 | |
| 3 | Tomás Costello# | 3268.2 | 2033-2038 | |
| 4 | Fernando Castro | 2496.2 | 2020-2025 | |
| 5 | Pancho Rodríguez# | 2432.2 | 2034-2038 | |
| 6 | Markus Thompson | 2397.1 | 2029-2032 | |
| 7 | José Cuervo | 2158.1 | 2033-2037 | |
| 8 | Orlando Casillas# | 2000.0 | 2034-2038 | |
| 9 | Stephen McManus | 1980.2 | 2028-2035 | |
| 10 | Tasuku Goto# | 1977.1 | 2036-2038 | |
| 11 | Vojtech Farkas | 1969.0 | 2027-2038 | |
| 12 | Jean Chamissa | 1947.2 | 2021-2032 | |
| 13 | Emílio Gonzáles | 1873.2 | 2023-2033 | |
| 14 | Alonso Solís | 1834.2 | 2024-2028 | |
| 15 | Yun-qi Chien | 1715.1 | 2031-2034 | |
| 16 | Rafael Najcrea | 1696.0 | 2020-2022 | |
| 17 | Ramón Robles# | 1642.1 | 2035-2038 | |
| 18 | Neil Nash | 1640.2 | 2020-2026 | |
| 19 | Jay Kidd | 1525.2 | 2025-2027 | |
| 20 | David McJannett | 1516.0 | 2024-2032 | |
| 21 | Wu-shiun Wang | 1511.0 | 2029-2035 | |
| 22 | Eldon McGillivour | 1509.1 | 2021-2025 | |
| 23 | Bubba Blevins | 1478.0 | 2025-2027 | |
| 24 | Don McGhee# | 1431.1 | 2036-2038 | |
| 25 | Manny Rosário | 1429.1 | 2023-2029 | |
| 26 | Javier Santos | 1423.0 | 2020-2025 | |
| 27 | Robert Emmet Odlum | 1379.0 | 2027-2034 | |
| 28 | Josh Stafford | 1343.0 | 2021-2025 | |
| 29 | Phil Parkinson | 1337.1 | 2022-2025 | |
| 30 | Vito Middendorf# | 1308.1 | 2031-2035 | |
| 31 | Israel Sanders | 1293.2 | 2027-2030 | |
| 32 | Claudio Mendoza | 1285.1 | 2020-2027 | |
| 33 | Sigi Lang# | 1279.2 | 2033-2035 | |
| 34 | Steve Irwin | 1256.2 | 2031-2036 | |
| 35 | Mario Piña | 1255.0 | 2023-2025 |
