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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | IP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Steve Weber | 3028.0 | 2029-2032 | |
| 2 | Stephen McManus | 2892.0 | 2026-2034 | |
| 3 | Jesús Méndez# | 2809.1 | 2038-2041 | |
| 4 | Yun-qi Chien | 2774.1 | 2028-2031 | |
| 5 | Carlos Sánchez | 2646.2 | 2018-2022 | |
| 6 | Robbie Chambers | 2438.1 | 2021-2024 | |
| 7 | Pancho Rodríguez | 2283.1 | 2031-2038 | |
| 8 | Jean Couturier# | 2283.0 | 2033-2037 | |
| 9 | Wilson Mitchell | 2152.2 | 2037-2039 | |
| 10 | Jasper Otto | 1989.0 | 2024-2027 | |
| 11 | Robert Emmet Odlum | 1884.0 | 2024-2031 | |
| 12 | Cheh Zhi | 1868.2 | 2034-2039 | |
| 13 | Eric Howard | 1853.0 | 2016-2025 | |
| 14 | Hsui-chuan Hong | 1768.0 | 2034-2039 | |
| 15 | Hélio Capriati# | 1696.2 | 2038-2039 | |
| 16 | José Cordero | 1687.0 | 2024-2028 | |
| 17 | Bogumil Tiwontschik | 1683.1 | 2031-2033 | |
| 18 | Tony Castellanos# | 1671.1 | 2039-2041 | |
| 19 | Tim Norris | 1663.0 | 2016-2021 | |
| 20 | Brandon Palmer | 1638.2 | 2036-2038 | |
| 21 | Bob Houghton | 1612.1 | 2031-2035 | |
| 22 | Francisco Morales | 1597.1 | 2021-2023 | |
| 23 | Chris Cordell | 1583.0 | 2016-2021 | |
| 24 | Stephen Johnson | 1523.2 | 2022-2025 | |
| 25 | Mike Daniels | 1459.2 | 2021-2023 | |
| 26 | Júlio Morín Jr. | 1459.1 | 2032-2033 | |
| 27 | Manuel Vroonland | 1421.2 | 2034-2038 | |
| 28 | Francisco Alfaro | 1260.0 | 2029-2030 | |
| 29 | Bob Ethridge | 1256.2 | 2020-2024 | |
| 30 | Dong-joo Yu | 1256.1 | 2033-2035 |
