Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
1. Adams, Mike Bucheon Angels 2.3
2. Chapman, Aroldis Base Ball Classics 2.7
3. Chapman, Aroldis Boston Sonsofbeaches 2.9
4. Hader, Josh Minnesota Snowmen 3.0
5. Benitez, Armando Philadelphia Phillies 2.9
6. Williams, Devin OC Panthers 3.0
7. Chapman, Aroldis Macon Friends 3.0
8. Betances, Dellin Raleigh Horses 3.0
9. Henry, Doug Nineties Nubbers 3.0
10. Chapman, Aroldis New York Bluebirds 3.1
11. Gagne, Eric Silver Jet 3.1
12. Benitez, Armando Cazadero Ranchers 3.1
13. Williamson, Scott Hawaii Eruptions 3.2
14. Marmol, Carlos Springfield Troy McClures 3.1
15. Chapman, Aroldis Hello Kitty 3.2
16. Kuo, Hong-Chih Bail Out 3.2
17. Marmol, Carlos Philadelphia Athletics 3.2
18. Adams, Mike Base Ball Classics 3.2
19. Adams, Mike Raleigh Angry Ducks 3.2
20. Kimbrel, Craig Mt. Gretna Campers 3.2
21. Chapman, Aroldis Base Ball Classics 3.2
22. Hader, Josh Hoboken Zephyrs 3.2
23. Rivera, Mariano New York Pandas 3.2
24. Betances, Dellin Balco Roid Rage 3.2
25. Jansen, Kenley The Masked Marauders 3.2
26. Hader, Josh Texas Sharks 3.3
27. Chapman, Aroldis Queens Baseball Club 3.2
28. Chapman, Aroldis Base Ball Classics 3.3
29. Chapman, Aroldis In Fair Light 3.2
30. Hader, Josh Base Ball Classics 3.3
31. Saito, Takashi Washington Huskies 3.3
32. Chapman, Aroldis Base Ball Classics 3.3
33. Chapman, Aroldis Htown Skeeters 3.3
34. Chapman, Aroldis Washington Racin' Rebels 3.3
35. Betances, Dellin Castaway SPEEDWELLS 3.3
36. Wagner, Billy Saint Johns Tigers 3.3
37. Street, Huston The Good The Bat And the Utley 3.3
38. Soria, Joakim El paso Predators 3.3
39. Adams, Mike San Diego SOVIETS 3.3
40. Boxberger, Brad Crieff Highlanders 3.3
41. Chapman, Aroldis New York Mutuals 3.3
42. Adams, Mike Boston Commons 3.3
43. Marmol, Carlos St Louis Spiders 3.3
44. Feliz, Neftali Huntsville Bearkats 3.3
45. Boxberger, Brad California WildFire 3.3
46. Adams, Mike Minot Minotaurs 3.3
47. Ottavino, Adam Jean Ralphios 3.3
48. Street, Huston Macon History 3.3
49. Kimbrel, Craig All-Valley Buzz 3.3
50. Adams, Mike Raleigh Crabs 3.3