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 | (rfb60609) | Millersburg Muffins | 65 |
| 2. | Street, Huston | (batista) | Cleveland Naps | 65 |
| 3. | Uehara, Koji | (nycubsfan) | Jackson Heights Knights | 63 |
| 4. | Doolittle, Sean | (nycubsfan) | Jackson Heights Knights | 63 |
| 5. | Uehara, Koji | (doittoitlars) | Round Rock Rhinos | 62 |
| 6. | Jansen, Kenley | (batista) | 25 Indestructable ENLIGHTENMENTS | 61 |
| 7. | Wagner, Billy | (dunroche) | New York Knights | 61 |
| 8. | Lockwood, Skip | (DaveH) | Ladson Cougars | 61 |
| 9. | Doolittle, Sean | (nycubsfan) | NYC Cubbies | 61 |
| 10. | Davis, Ron | (jrobandsteal) | Flux Capasitors | 61 |
| 11. | Doolittle, Sean | (nycubsfan) | Chicago Cubs | 61 |
| 12. | Adams, Mike | (nycubsfan) | Rochester Red Wings | 61 |
| 13. | Adams, Mike | (Pop) | Carolina Beachbums | 60 |
| 14. | Uehara, Koji | (MikeDrop0221) | South Texas Pigmen | 60 |
| 15. | Kimbrel, Craig | (markphip) | Yellowstone Wolves | 60 |
| 16. | Kimbrel, Craig | (sytsmab) | Sactown Royalty | 60 |
| 17. | Beck, Rod | (zmessler) | Lip City Remnants | 60 |
| 18. | Uehara, Koji | (hayzess) | Portland Rain | 60 |
| 19. | Wagner, Billy | (HaloFire) | New York Dragons | 60 |
| 20. | Feliz, Neftali | (billyconn) | Crazytown Owls | 59 |
| 21. | Wilhelm, Hoyt | (noleary) | Philadelphia Express | 59 |
| 22. | Gagne, Eric | (nycubsfan) | Jackson Heights Nittany Lions | 59 |
| 23. | Feliz, Neftali | (cubanlou) | Lewisberry Old Timers | 59 |
| 24. | Adams, Mike | (dunroche) | New York Knights | 59 |
| 25. | Adams, Mike | (dynasty) | Canarsie Cannibals | 59 |
| 26. | Street, Huston | (Whg383) | Brooklyn Bisons | 59 |
| 27. | Feliz, Neftali | (filler) | Washington Angry Ducks | 59 |
| 28. | Adams, Mike | (Majestic44) | Houston Dragons | 59 |
| 29. | Davis, Wade | East Ridge Pioneers | 59 | |
| 30. | Gossage, Rich | (Sidneypointers) | Longview Outcasts | 59 |
| 31. | Doolittle, Sean | (nycubsfan) | Jackson Heights Knights | 58 |
| 32. | Kimbrel, Craig | (dunroche) | Inland Empire 66ers | 58 |
| 33. | Doolittle, Sean | (dunroche) | Nevada Racin' Rebels | 58 |
| 34. | Hader, Josh | (mintwinsfan) | Auckerman Descendants | 58 |
| 35. | Wagner, Billy | (cjay1444) | Niigata Prefecture Ninjas | 58 |
| 36. | McDaniel, Lindy | (jericho2u) | Tropicana Tush | 58 |
| 37. | Adams, Mike | (nycubsfan) | Sugarland Skeeters | 58 |
| 38. | Kimbrel, Craig | (Whg383) | Brooklyn Bisons | 58 |
| 39. | Messersmith, Andy | (DaveH) | Ladson Dodgers | 57 |
| 40. | Papelbon, Jonathan | (nycubsfan) | Chicago Cubs | 57 |
| 41. | Benoit, Joaquin | (dynasty) | Chesterfield Knights | 57 |
| 42. | Wagner, Billy | (nycubsfan) | Goshen Gorillas | 57 |
| 43. | Abernathy, Ted | (babyave1) | Loudoun Lassos | 57 |
| 44. | Doolittle, Sean | (joemcg) | OC Bulldogs | 57 |
| 45. | Gagne, Eric | (nycubsfan) | American Pharoahs | 57 |
| 46. | Hernandez, Willie | (catefigcas) | New York Mets | 57 |
| 47. | Gossage, Rich | (speedymjb) | Ballantine Blasts | 57 |
| 48. | Adams, Mike | (MikeDrop0221) | South Texas Pigmen | 57 |
| 49. | Uehara, Koji | (Brooker) | Durham Bullwinkles | 57 |
| 50. | Doolittle, Sean | (Majestic44) | Reno Tigers | 57 |