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. | Atkinson, Al | (56Castle99) | Chenango Wolves | 20 |
| 2. | Devlin, Jim | (Slothmonkey) | Baltimore Orioles | 20 |
| 3. | Mountain, Frank | (Doceagle) | Visalia Oaks | 20 |
| 4. | Stone, Arnie | (bwoodcoc) | Delaware Wildcats | 20 |
| 5. | Coveleski, Harry | (bwoodcoc) | Pittsburgh Pirates | 19 |
| 6. | Napier, Buddy | (baseball4ever) | Casablanca Gamblers | 19 |
| 7. | Brennan, Don | (Doceagle) | Kansas City Monarchs | 19 |
| 8. | Bowman, Bob | (Trulaia) | GLOBEX Corporation | 19 |
| 9. | Vaughn, Hippo | Springfield Drunken Gambler | 19 | |
| 10. | Clark, Watty | New York Mets | 18 | |
| 11. | Gabler, Frank | (Silvereaglemyst) | Carolina Mud Cats | 18 |
| 12. | Clippard, Tyler | (habsco) | Tampa Terror | 18 |
| 13. | Grabowski, Al | (baseball4ever) | G-Men Untouchables | 18 |
| 14. | Powell, Jack | (timyoung) | Graceville Slumpbusters | 18 |
| 15. | Rivero, Felipe | (habsco) | St Catharines Blues | 18 |
| 16. | Willis, Vic | (philtomney) | Providence Steamrollers | 17 |
| 17. | McCormick, Harry | (tmcarthur72) | Las Vegas Bolts | 17 |
| 18. | Henneman, Mike | (Arcticwolf) | Rock Tavern Shop Stewards | 17 |
| 19. | Tyler, Lefty | (Slothmonkey) | Baltimore Orioles | 17 |
| 20. | Green, Chad | Keystone Cowboys | 17 | |
| 21. | Judd, Ralph | (dshearer) | Boston Bulldogs | 17 |
| 22. | Galvin, Pud | (PicklePunk20) | Manitoba Grizzlies | 17 |
| 23. | Guerra, Junior | (habsco) | Laurel Billings Bees | 16 |
| 24. | Hadley, Bump | (kruker232323) | Windsor Wild Geese | 16 |
| 25. | Beck, Rod | (dynasty) | Seattle Pilots | 16 |
| 26. | Zimmerman, Jeff | (Silvereaglemyst) | Minneapolis Dragons | 16 |
| 27. | Rogers, Taylor | (mattholland1975) | Pembroke Pigs | 16 |
| 28. | Summers, Ed | (dshearer) | Kingston Cougars | 16 |
| 29. | Reardon, Jeff | Olde English 800's | 16 | |
| 30. | Donovan, Bill | Iowa Deadballers | 16 | |
| 31. | Pearce, Frank | (TheNatural) | Dayton DRAGONS | 16 |
| 32. | McNamara, Tim | (Dpm1974) | Ottawa Owls | 16 |
| 33. | Tannehill, Jesse | (damionm21) | Mojave Desert Route 666ers | 16 |
| 34. | Rhines, Billy | (gt049) | Washington Huskies | 16 |
| 35. | Demaree, Al | (PARATROOPER22) | CLARKSVILLE CARTOON MEN | 16 |
| 36. | Duryea, Jesse | (Shpennymons) | Cleveland Naps | 16 |
| 37. | McCormick, Harry | (wellandgood) | Welland Watchdogs | 16 |
| 38. | Benitez, Armando | (beck) | Ford Edsels | 16 |
| 39. | Weir, Roy | (teamkev24) | Big Red | 16 |
| 40. | Culver, George | (chasherm) | Madison Monarchs | 15 |
| 41. | Devlin, Jim | (dshearer) | Salt Lake Crabs | 15 |
| 42. | Moore, Wilcy | (tgbsbl1967) | Milwaukee Legends | 15 |
| 43. | Moore, Cy | (TheNatural) | Dayton DRAGONS | 15 |
| 44. | James, Bill | The Great Train Robbers | 15 | |
| 45. | Shoffner, Milt | (JStrauss51) | Memphis Mashers | 15 |
| 46. | Stone, Arnie | (dshearer) | Boston Bulldogs | 15 |
| 47. | Betancourt, Rafael | (waseb8511) | Boston AstroSox | 15 |
| 48. | Davis, Ron | (Arcticwolf) | Gardiner Big Dogs | 15 |
| 49. | Eichhorn, Mark | (Mattattack38) | Boston Thunderbolts | 15 |
| 50. | Moore, Wilcy | (dynasty) | Greenfield Cincinatti Rads | 15 |