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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | IP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | David Henderson | 4627.2 | 2016-2025 | |
| 2 | Nobuo Yamashita# | 4442.2 | 2025-2032 | |
| 3 | Cale Sutton | 3734.1 | 2015-2031 | |
| 4 | Gregg Wagner | 3434.1 | 2019-2028 | |
| 5 | Ramiro Salazar | 3101.2 | 2016-2027 | |
| 6 | Luis Ríos# | 2901.1 | 2027-2031 | |
| 7 | Tommy Jones# | 2783.1 | 2015-2030 | |
| 8 | Jack MacAsgill# | 2695.0 | 2023-2029 | |
| 9 | Gabriel Pérez# | 2691.2 | 2023-2028 | |
| 10 | José Ramírez | 2451.2 | 2015-2019 | |
| 11 | Jon Osterman# | 2383.0 | 2028-2032 | |
| 12 | Chris West | 2357.2 | 2020-2027 | |
| 13 | Count Dante# | 2311.1 | 2025-2032 | |
| 14 | Manuel García | 2167.1 | 2014-2021 | |
| 15 | Jay Parker# | 2150.2 | 2024-2028 | |
| 16 | António Pérez# | 2096.2 | 2021-2032 | |
| 17 | Ramón Rivera# | 2082.0 | 2023-2028 | |
| 18 | John Farrell | 2069.2 | 2016-2022 | |
| 19 | Julián Salcido# | 2008.1 | 2027-2032 |
