Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
1. Valverde, Jose Naples Lakers 1.9
2. Betances, Dellin Staten Island Skulls 2.0
3. Benitez, Armando B Bonds Bombers 2.1
4. Boxberger, Brad Nevada Racin' Rebels 2.3
5. Street, Huston Pasadena TWolves 2.3
6. Balfour, Grant Yomiuri Giants 2.3
7. Papelbon, Jonathan San Antonio Texans 2.4
8. Hahn, Jesse Dale Pirates 2.4
9. Papelbon, Jonathan Huntsville Bearkats 2.5
10. Waddell, Tom Star City Starblazers 2.5
11. Nen, Robb Pentagon CaNNoN FoDDe R 2.5
12. Guthrie, Mark Ladson Cougars 2.6
13. Charlton, Norm North Bridgton Fins 2.6
14. Wagner, Billy Goshen Gorillas 2.7
15. Street, Huston South Texas Pigmen 2.7
16. Hernandez, David Hagerstown Suns 2.7
17. Britton, Zach East County Devil Dogs 2.7
18. Valverde, Jose Badboy Brawlers 2.7
19. Segui, Diego Houghton Miners 2.7
20. Balfour, Grant Friday Knight Frogs 2.7
21. Kimbrel, Craig South Dakota Cyclones 2.7
22. Doolittle, Sean Delaware Gators 2.7
23. Doolittle, Sean Chester Springs Menjai 2.7
24. Chapman, Aroldis CAPAHA CAVEMEN 2.7
25. Zimmerman, Jeff Boston Celtics 2.8
26. Konstanty, Jim Freehold Yankees2 2.8
27. Nen, Robb Casper Ghosts 2.8
28. Percival, Troy Minneapolis Mafia 2.7
29. Soriano, Rafael NYC Cubbies 2.8
30. Cabrera, Genesis York Spartans2 2.8
31. Nathan, Joe Spring Bearkats 2.7
32. Soriano, Rafael Iowa Corn Pickers 2.8
33. Percival, Troy Cobra Kao Strickers 2.8
34. Balfour, Grant Chenango Wolves 2.8
35. Lidge, Brad Raleigh Sharks🇺🇦 2.8
36. Pagan, Emilio SEARCY COPPERHEADS 2.8
37. Percival, Troy Skowhegan New Mascots 2.8
38. Hahn, Jesse Los Angeles Angelfish 2.8
39. Valverde, Jose Worcester Warriors 2.8
40. Diaz, Edwin Afghan DisasTER 2.8
41. Marmol, Carlos Raleigh Sharks 2.8
42. Britton, Zach Las Vegas Silver Knights 2.9
43. Lidge, Brad Pabst Keggers 2.9
44. Jackson, Mike Milwaukee Moo 2.9
45. Brewer, Jim Louisiana RedZ 2.9
46. Devine, Joey New York Highlanders 2.8
47. Boxberger, Brad Raleigh Bull Dogs 2.9
48. Henke, Tom Bedrock Flinstones 2.9
49. Politte, Cliff Calgary Bad News Browns 2.9
50. Kimbrel, Craig Boston Red Sox 2.9