Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
1. Jansen, Kenley Chicago Reapers 0.28
2. Schiraldi, Calvin Marion Center Devils 0.57
3. Jackson, Mike Burma Harry Butz 0.57
4. Nathan, Joe Morleyville Mud Skippers 0.58
5. Eichhorn, Mark Newark Eagles 0.59
6. Rivera, Mariano Raging Roiders 0.60
7. Adams, Mike Jackson Heights Knights 0.63
8. McGraw, Tug Team Seven 0.64
9. Jansen, Kenley Port Saint Lucie Patriots 0.65
10. Chapman, Aroldis Base Ball Classics 0.65
11. Papelbon, Jonathan Liberty Banditos 57 0.68
12. Abernathy, Ted New Brunswick Zebras 0.68
13. Street, Huston Base Ball Classics 0.68
14. Radatz, Dick San Juan Suns 0.68
15. Davis, Wade Oakland Arachnid 0.69
16. Kelley, Shawn Beastie Boys 0.70
17. Pressly, Ryan Cohutta Colts 0.71
18. Adams, Mike Forest City Owls 0.71
19. Alvarado, Jose Boston Bees 0.71
20. Chapman, Aroldis Pinchot Park Rangers 0.72
21. Eckersley, Dennis Boston Bees 0.72
22. Howe, Steve H Town H's 0.72
23. Feliz, Neftali J'VILLE JETS 0.73
24. Wagner, Billy Tacoma Predators 0.72
25. Wilhelm, Hoyt Raritan Retrievers 0.73
26. Eckersley, Dennis Vermont Lake Monsters 0.73
27. Broxton, Jonathan Brooklyn Dodgers 0.75
28. Hall, Dick Loudoun Lassos 0.75
29. Iglesias, Raisel Death Valley Devils 0.76
30. Montgomery, Jeff Warner Town Animaniacs 0.78
31. Papelbon, Jonathan Brooklyn Boppers 0.78
32. Nomura, Takahito 新潟 コシヒカリ 0.80
33. Benoit, Joaquin Halifax Hypno Toads 0.80
34. Gagne, Eric Danville Duds 0.81
35. Holland, Greg Iowa Corn Pickers 0.81
36. Zimmerman, Jeff WF Greyhounds 0.82
37. Capps, Carter Bartons Nighthawks 0.81
38. Fromme, Art Wild Cats 0.82
39. Melancon, Mark Chapecó Panther 0.82
40. Foulke, Keith Boston Red Sox 0.83
41. Valverde, Jose Baltimore Orioles 0.83
42. Giles, Ken Macon Mistakes 0.83
43. Gallegos, Giovanny Arizona Aces 0.83
44. McCool, Billy MidTown Townies 0.84
45. Gossage, Rich Crosstown Cranberries 0.85
46. Russell, Jeff Dixie Boy Happy Toyz 0.85
47. Rivera, Mariano Las Vegas Scorpions 0.85
48. Rivera, Mariano Pinochet Pilots 0.85
49. Saito, Takashi RED Sergeants 0.85
50. Percival, Troy Oklahoma Rockhounds 0.85