Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Saves)
Average
OBP
SLG
OPS
At Bats
Runs
Hits
Doubles
Triples
Homers
RBIs
Walks
Strikeouts
Stolen Bases
Caught Stealing
Sac Hits
Sac Fly
HBP
GIDP
D+/-
Wins
Losses
ERA
WHIP
Innings
Hits Allowed
HR Allowed
Walks (P)
Strikeouts (p)
Complete Games
Saves
Blown Saves
Shutouts
Quality Starts
Wild Pitches
Hit Batters
H/9
BB/9
SO/9
| 1. | Gagne, Eric | Oakmont Candle Makers | 65 | |
| 2. | Street, Huston | (filler) | Cleveland Naps | 65 |
| 3. | Uehara, Koji | (nycubsfan) | Jackson Heights Knights | 63 |
| 4. | Doolittle, Sean | (nycubsfan) | Jackson Heights Knights | 63 |
| 5. | Fingers, Rollie | (joshresnik) | Connecticut Renegades | 62 |
| 6. | Uehara, Koji | (MikeDrop0221) | Round Rock Rhinos | 62 |
| 7. | Romo, Vicente | (jpcortez) | Mid-Century Moderns | 61 |
| 8. | Lockwood, Skip | (tda81) | New Orleans Voodoo | 61 |
| 9. | Davis, Ron | (sheikyerboudi) | Flux Capasitors | 61 |
| 10. | Adams, Mike | (nycubsfan) | Rochester Red Wings | 61 |
| 11. | Jansen, Kenley | (batista) | 25 Indestructable ENLIGHTENMENTS | 61 |
| 12. | Wagner, Billy | (dunroche) | New York Knights | 61 |
| 13. | Doolittle, Sean | (nycubsfan) | Chicago Cubs | 61 |
| 14. | Uehara, Koji | South Texas Killer Bees | 60 | |
| 15. | Percival, Troy | (Kaline65) | Temple City Zorros | 60 |
| 16. | Kimbrel, Craig | (sytsmab) | Sactown Royalty | 60 |
| 17. | Uehara, Koji | (hayzess) | Portland Rain | 60 |
| 18. | Kimbrel, Craig | (rreebe916) | Lewisberry Old Timers | 60 |
| 19. | Adams, Mike | (Pop) | Carolina Beachbums | 60 |
| 20. | Wagner, Billy | (HaloFire) | New York Dragons | 60 |
| 21. | Adams, Mike | (Hendu42) | Columbo Detectives | 59 |
| 22. | Gossage, Rich | (Sidneypointers) | Longview Outcasts | 59 |
| 23. | Gagne, Eric | (nycubsfan) | Jackson Heights Nittany Lions | 59 |
| 24. | Davis, Wade | (ScottCornelius) | East Ridge Pioneers | 59 |
| 25. | Street, Huston | (stevenray) | Brooklyn Bisons | 59 |
| 26. | Feliz, Neftali | (Ryan_Drinkwater) | Philadelphia Freedom | 59 |
| 27. | Feliz, Neftali | (filler) | Washington Angry Ducks | 59 |
| 28. | Wilhelm, Hoyt | (noleary) | Philadelphia Express | 59 |
| 29. | Adams, Mike | (dunroche) | New York Knights | 59 |
| 30. | Adams, Mike | (dynasty) | Canarsie Cannibals | 59 |
| 31. | Feliz, Neftali | (zmessler) | Crazytown Owls | 59 |
| 32. | Feliz, Neftali | (rreebe916) | Lewisberry Old Timers | 59 |
| 33. | Wagner, Billy | Niigata Prefecture Ninjas | 58 | |
| 34. | Kimbrel, Craig | (stevenray) | Brooklyn Bisons | 58 |
| 35. | Kimbrel, Craig | (dunroche) | Inland Empire 66ers | 58 |
| 36. | Doolittle, Sean | (nycubsfan) | Jackson Heights Knights | 58 |
| 37. | Chapman, Aroldis | (alstro11) | Vermilion Tyee 21 | 58 |
| 38. | McDaniel, Lindy | (DaveH) | Ladson Dodgers | 58 |
| 39. | Doolittle, Sean | (dunroche) | Nevada Racin' Rebels | 58 |
| 40. | Gagne, Eric | (nycubsfan) | NYC Cubbies | 57 |
| 41. | Street, Huston | (robmb) | Brooklyn Cyclones | 57 |
| 42. | Street, Huston | (Wheat23) | Long Island Burners | 57 |
| 43. | Doolittle, Sean | (joemcg) | OC Bulldogs | 57 |
| 44. | Sosa, Elias | Eager Eagle | 57 | |
| 45. | Papelbon, Jonathan | (nycubsfan) | Chicago Cubs | 57 |
| 46. | Hernandez, Willie | (catefigcas) | New York Mets | 57 |
| 47. | Kimbrel, Craig | (dunroche) | New York Knights | 57 |
| 48. | Wagner, Billy | (nycubsfan) | Goshen Gorillas | 57 |
| 49. | Gossage, Rich | (Slippingjimmy) | Chittenango Diamonds | 57 |
| 50. | Gagne, Eric | (nycubsfan) | American Pharoahs | 57 |