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| All-Time Pitching Leaders | |||
| Single Season Innings Pitched Leaders | |||
| Rank | Player | IP | Season |
| 1. | Will White | 680.0 | 1879 |
| 2. | Old Hoss Radbourn | 679.0 | 1884 |
| 3. | Guy Hecker | 671.0 | 1884 |
| 4. | Jim McCormick | 658.0 | 1880 |
| 5. | Pud Galvin | 656.0 | 1883 |
| 6. | Pud Galvin | 636.0 | 1884 |
| 7. | Old Hoss Radbourn | 632.0 | 1883 |
| 8. | Bill Hutchinson | 627.0 | 1892 |
| 9. | John Clarkson | 623.0 | 1885 |
| 10. | Jim Devlin | 622.0 | 1876 |
| 11. | John Clarkson | 620.0 | 1889 |
| 12. | Tim Keefe | 619.0 | 1883 |
| 13. | Bill Hutchinson | 603.0 | 1890 |
| 14. | Jim McCormick | 596.0 | 1882 |
| 15. | Monte Ward | 595.0 | 1880 |
| Active players shown in CAPS | Last Updated: Fri May 25 08:15:05 EDT 2012 | |||
