Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
1. Feliz, Neftali Washington Angry Ducks 1.7
2. McHugh, Collin Appalachian Moonshiners 2.2
3. Edwards, Carl New York Mets 2.3
4. Street, Huston Durango Devils 😈 2.3
5. Marmol, Carlos Portland Beavers 2.3
6. Hader, Josh Oshkosh SMC 2.4
7. Saucier, Kevin Gotham Dark Knights 2.4
8. Boxberger, Brad Asbury Park LUMPEN PROLS 2.4
9. Kimbrel, Craig Wormsleyburg Warriors 2.4
10. Kimbrel, Craig Pope Pius Pals 2.5
11. Valverde, Jose Batting Gloves 2.5
12. Gagne, Eric Scottsdale Suns 2.6
13. Hader, Josh Fargo Freeze 2.6
14. Wagner, Billy Texas Tomahawks 2.6
15. Papelbon, Jonathan Singapore Slingers 2.6
16. Feliz, Neftali Washington Angry Ducks 2.6
17. Street, Huston Schenectady Southpaws 2.6
18. Marmol, Carlos Beuhlah Land Bunyans 2.6
19. Papelbon, Jonathan New York Black Yankees 2.6
20. Adams, Mike Carolina Mad Ducks 2.6
21. Kuo, Hong-Chih Nashville Sounds 2.6
22. Wagner, Billy Goshen Gorillas 2.7
23. Street, Huston South Texas Killer Bees 2.7
24. Chapman, Aroldis Chicago Colts 2.6
25. Soriano, Rafael Hawaii Five 0's 2.7
26. Nen, Robb Pope Pius Pals 2.7
27. Street, Huston Allentown Dogs 2.7
28. Percival, Troy Iowa Corn Pickers 2.6
29. Adams, Mike Singapore Slingers 2.7
30. Segui, Diego Brooklyn Superbas 2.7
31. Edwards, Carl Cincinnati Bow Ties 2.7
32. Dotel, Octavio Boston Bees 2.7
33. Kuo, Hong-Chih Staten Island Ferries 2.7
34. Balfour, Grant Way Down Yonder Chatahoochies 2.7
35. Wagner, Billy Murdock Miners 2.7
36. Doolittle, Sean Delaware Gators 2.7
37. Kimbrel, Craig Fredricksburg Feds 2.7
38. Doolittle, Sean Chester Springs Menjai 2.7
39. Feliz, Neftali Norman Sooners 2.7
40. Hader, Josh New York Cubans 2.7
41. Betances, Dellin Appalachian Trail Blazers 2.7
42. Feliz, Neftali South Dakota Storm 2.8
43. Green, Chad Donkey Hodey 2.7
44. Balfour, Grant SAN DIEGO ROUGHNECKS 2.8
45. Kimbrel, Craig Tijuana Chupacabras⚾ 2.8
46. Nen, Robb RIC Wonderboys 2.8
47. Balfour, Grant Iowa Corn Pickers 2.8
48. Miller, Andrew Alinor High elves 2.8
49. Betances, Dellin New York Black Yankees 2.8
50. Treinen, Blake Toledo Mighty Hens 2.8