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| Career Walks per 9IP Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | Walks per 9IP | IP | Years | Single Season Leaderboard |
| 1. | Bobby Grimes | 0.86 | 1625.3 | 2009-2014 | |
| 2. | Marcus Dinges | 1.27 | 1234.6 | 2009-2014 | |
| 3. | Pedro Ramirez | 1.65 | 1481.6 | 2009-2014 | |
| 4. | Robert Carson | 1.76 | 1383.6 | 2009-2014 | |
| 5. | James Sousa | 1.78 | 1525.7 | 2009-2014 | |
| 6. | Joseph Allen | 1.92 | 1176.0 | 2010-2014 | |
| 7. | Paul Cevallos | 2.10 | 1135.7 | 2009-2014 | |
| 8. | George Anderson | 2.14 | 1022.3 | 2009-2014 | |
| 9. | Ramon Medina | 2.15 | 1149.3 | 2009-2014 | |
| 10. | Michael Arnett | 2.21 | 1109.6 | 2009-2014 | |
| 11. | Joe Laubach | 2.23 | 1209.0 | 2009-2014 | |
| 12. | Ryan Stacy | 2.29 | 1206.0 | 2009-2014 | |
| 13. | Bryan Kaplan | 2.30 | 1394.3 | 2009-2014 | |
| 14. | Harold Garfinkel | 2.36 | 1234.0 | 2009-2014 | |
| 15. | Richard Dicks | 2.38 | 1487.0 | 2009-2014 | |
| 16. | Felix Murff | 2.40 | 1441.7 | 2009-2014 | |
| 17. | Felix Corchado | 2.56 | 1383.3 | 2009-2014 | |
| 18. | Eric Alba | 2.58 | 1031.0 | 2009-2014 | |
| 19. | Isogorou Chomei | 2.65 | 1197.3 | 2009-2014 | |
| 20. | Rick Varney | 2.70 | 1348.3 | 2009-2014 | |
| 21. | Michael Munroe | 2.73 | 1089.7 | 2009-2014 | |
| 22. | John McCasland | 2.84 | 1025.0 | 2009-2014 | |
| 23. | Walter Lopez | 2.88 | 1076.3 | 2009-2014 | |
| 24. | Eric Waddington | 2.88 | 1179.0 | 2009-2014 | |
| 25. | Gerald Orduna | 2.89 | 1380.6 | 2009-2014 | |
| 26. | Angel Rodriguez | 2.96 | 1015.3 | 2010-2014 | |
| 27. | Dennis Hunt | 3.06 | 1382.0 | 2009-2014 | |
| 28. | Andre Morales | 3.09 | 1344.7 | 2009-2014 | |
| 29. | Carlos Molina | 3.16 | 1330.3 | 2009-2014 | |
| 30. | Bill Hightower | 3.18 | 1402.3 | 2009-2014 | |
| 31. | Nicholas Lenard | 3.30 | 1242.7 | 2009-2014 | |
| 32. | Kevin Whitford | 3.31 | 1194.3 | 2009-2014 | |
| 33. | Brian Reiter | 3.32 | 1002.3 | 2009-2013 | |
| 34. | Miles Farrelly | 3.34 | 1392.0 | 2009-2014 | |
| 35. | Jamie Coop | 3.42 | 1256.7 | 2009-2014 | |
| 36. | Sam Glisson | 3.50 | 1029.0 | 2009-2014 | |
| 37. | Casey George | 3.57 | 1094.0 | 2009-2014 | |
| 38. | Mario Fung | 3.58 | 1014.7 | 2009-2013 | |
| 39. | James Munguia | 3.86 | 1160.3 | 2009-2014 | |
| 40. | Cedric Monasterio | 4.19 | 1099.7 | 2009-2014 | |
| 41. | Danial Hayes | 4.52 | 1068.3 | 2009-2014 | |
| 42. | Ronald Koenig | 5.10 | 1124.6 | 2009-2014 | |
| 43. | Pedro Cobas | 5.25 | 1178.0 | 2009-2014 |
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