Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Blown 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. | Coveleski, Harry | (ahulabdul) | Pittsburgh Pirates | 19 |
| 2. | Brennan, Don | (ayj88) | Rabid Rabbits | 19 |
| 3. | Grabowski, Al | (baseball4ever) | G-Men Untouchables | 18 |
| 4. | Powell, Jack | (timyoung) | Graceville Slumpbusters | 18 |
| 5. | McCormick, Harry | (mtodderwou) | Oregon Thorn | 17 |
| 6. | Lemaster, Denny | (bfstevens) | Mt. Washington Moose | 17 |
| 7. | Hess, Otto | (dynasty) | Buffalo Bandits | 17 |
| 8. | Green, Chad | (kaline6) | New York Mets | 17 |
| 9. | Weir, Roy | (teamkev24) | Big Red | 16 |
| 10. | Hadley, Bump | (kruker232323) | Windsor Wild Geese | 16 |
| 11. | Pearce, Frank | (thunderstruck) | Dayton DRAGONS | 16 |
| 12. | Sothoron, Allen | (bostontex24) | Boston Meerkats | 16 |
| 13. | Duryea, Jesse | (Shpennymons) | Cleveland Naps | 16 |
| 14. | Rhines, Billy | (kwipfer23) | Mountain High Wild Stallions | 16 |
| 15. | Summers, Ed | (dshearer) | Kingston Cougars | 16 |
| 16. | McCormick, Harry | (JTrue) | Southend Spartans | 16 |
| 17. | Tannehill, Jesse | (tribetime89) | Farmington Fireballs | 16 |
| 18. | McNamara, Tim | (Sdwriter) | TL Legends | 16 |
| 19. | Culver, George | (chasherm) | Madison Monarchs | 15 |
| 20. | Bell, Hi | (mickey7) | Calumet Wolverines | 15 |
| 21. | Fuentes, Brian | (naterg) | Ohio Bloodbuzz | 15 |
| 22. | Moore, Wilcy | (filler) | Nintendo Baseball Stars | 15 |
| 23. | Lavelle, Gary | (pentucket80) | Essex County Hairy Nines | 15 |
| 24. | Smith, Al | (dynasty) | Los Angles Angles | 15 |
| 25. | Smoltz, John | (Fanfanatic1) | ROOTIE KAZOOTIES | 15 |
| 26. | Claudio, Alex | (Lester) | LA Hollywoods | 15 |
| 27. | Smoltz, John | (Novotny34) | Chicago Frisbees | 15 |
| 28. | Moore, Wilcy | (tgbsbl1967) | Milwaukee Legends | 15 |
| 29. | James, Bill | (Destiny) | 12th Man Deadballers | 15 |
| 30. | Mullane, Tony | (baseball4ever) | Panama Canal Builders | 15 |
| 31. | Moore, Cy | (thunderstruck) | Dayton DRAGONS | 15 |
| 32. | Larkin, Terry | Lincoln Links | 15 | |
| 33. | Chagnon, Leon | (timyoung) | Savannah Sand Gnats | 15 |
| 34. | Ames, Red | (Electro) | Pelham Puma | 15 |
| 35. | Wheeler, Dan | (tda81) | The Dangerous Alliance | 15 |
| 36. | Russell, Reb | (CubanLou) | Atom Ants | 15 |
| 37. | Eichhorn, Mark | (dunroche) | Boston Thunderbolts | 15 |
| 38. | Weaver, Sam | (Iceman367) | New York Clubbers | 15 |
| 39. | Stone, Arnie | (dshearer) | Boston Bulldogs | 15 |
| 40. | Sanders, Ben | (cunnythumber) | Long Beach Tornadoes | 15 |
| 41. | Moore, Wilcy | (dweier) | Los Angeles Sharks | 15 |
| 42. | Montgomery, Jeff | (Bluesig) | Eñorole War Birds | 15 |
| 43. | Shea, Red | (PalinJames) | Erie Fighters | 15 |
| 44. | Shoffner, Milt | (djeter2) | New York Yankees | 15 |
| 45. | Napier, Buddy | (baseball4ever) | Casablanca Gamblers | 15 |
| 46. | Oh, Seung-hwan | (habsco) | Tampa Terror | 15 |
| 47. | Brown, Clint | (PARATROOPER22) | SWEET WATER SWINGERS | 15 |
| 48. | Nen, Robb | (WorcWarr) | Worcester Warriors | 15 |
| 49. | Darwin, Danny | (chapman) | Winterfell Direwolves | 15 |
| 50. | Davis, Ron | (shadowspinner) | Sand Hill Rd Big Cats | 15 |