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| Career Strikeouts per 9IP Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | Strikeouts per 9IP | IP | Years | Single Season Leaderboard |
| 1. | Ronald Koenig | 10.96 | 1124.6 | 2009-2014 | |
| 2. | Danial Hayes | 10.53 | 1068.3 | 2009-2014 | |
| 3. | James Munguia | 10.24 | 1160.3 | 2009-2014 | |
| 4. | Miles Farrelly | 10.18 | 1392.0 | 2009-2014 | |
| 5. | James Sousa | 9.95 | 1525.7 | 2009-2014 | |
| 6. | Cedric Monasterio | 9.94 | 1099.7 | 2009-2014 | |
| 7. | Michael Arnett | 9.77 | 1109.6 | 2009-2014 | |
| 8. | Bobby Grimes | 9.65 | 1625.3 | 2009-2014 | |
| 9. | Walter Lopez | 9.62 | 1076.3 | 2009-2014 | |
| 10. | Andre Morales | 9.29 | 1344.7 | 2009-2014 | |
| 11. | John McCasland | 9.28 | 1025.0 | 2009-2014 | |
| 12. | Pedro Cobas | 8.92 | 1178.0 | 2009-2014 | |
| 13. | Pedro Ramirez | 8.90 | 1481.6 | 2009-2014 | |
| 14. | Dennis Hunt | 8.85 | 1382.0 | 2009-2014 | |
| 15. | Angel Rodriguez | 8.51 | 1015.3 | 2010-2014 | |
| 16. | Nicholas Lenard | 8.11 | 1242.7 | 2009-2014 | |
| 17. | Harold Garfinkel | 8.08 | 1234.0 | 2009-2014 | |
| 18. | Jamie Coop | 7.98 | 1256.7 | 2009-2014 | |
| 19. | Richard Dicks | 7.86 | 1487.0 | 2009-2014 | |
| 20. | Marcus Dinges | 7.81 | 1234.6 | 2009-2014 | |
| 21. | Kevin Whitford | 7.66 | 1194.3 | 2009-2014 | |
| 22. | Felix Corchado | 7.57 | 1383.3 | 2009-2014 | |
| 23. | Felix Murff | 7.52 | 1441.7 | 2009-2014 | |
| 24. | Isogorou Chomei | 7.41 | 1197.3 | 2009-2014 | |
| 25. | Joseph Allen | 7.19 | 1176.0 | 2010-2014 | |
| 26. | Bryan Kaplan | 7.02 | 1394.3 | 2009-2014 | |
| 27. | Mario Fung | 6.96 | 1014.7 | 2009-2013 | |
| 28. | Michael Munroe | 6.81 | 1089.7 | 2009-2014 | |
| 29. | Robert Carson | 6.76 | 1383.6 | 2009-2014 | |
| 30. | Ramon Medina | 6.44 | 1149.3 | 2009-2014 | |
| 31. | Ryan Stacy | 6.38 | 1206.0 | 2009-2014 | |
| 32. | Sam Glisson | 6.36 | 1029.0 | 2009-2014 | |
| 33. | Gerald Orduna | 6.29 | 1380.6 | 2009-2014 | |
| 34. | Paul Cevallos | 5.76 | 1135.7 | 2009-2014 | |
| 35. | Bill Hightower | 5.74 | 1402.3 | 2009-2014 | |
| 36. | Casey George | 5.56 | 1094.0 | 2009-2014 | |
| 37. | Brian Reiter | 5.48 | 1002.3 | 2009-2013 | |
| 38. | Rick Varney | 5.41 | 1348.3 | 2009-2014 | |
| 39. | Eric Alba | 5.39 | 1031.0 | 2009-2014 | |
| 40. | Eric Waddington | 4.89 | 1179.0 | 2009-2014 | |
| 41. | George Anderson | 4.35 | 1022.3 | 2009-2014 | |
| 42. | Carlos Molina | 3.96 | 1330.3 | 2009-2014 | |
| 43. | Joe Laubach | 3.83 | 1209.0 | 2009-2014 |
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