Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Shutouts)
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. | Fujimoto, Hideo | (filler8) | Las Vegas Gladiators | 11 |
| 2. | Martinez, Pedro | (bush484) | Canton Lumber Company | 11 |
| 3. | Fujimoto, Hideo | Yonaguni Sharks | 11 | |
| 4. | Martinez, Pedro | (chaaad) | BX Bombers | 10 |
| 5. | Righetti, Dave | (Taneill) | NL 1984 All Stars | 10 |
| 6. | Righetti, Dave | (walle-1) | Phoenix Dragons | 10 |
| 7. | Johnson, Randy | (filler8) | New Jersey Devils | 10 |
| 8. | Richard, J.R. | (gibblets1973) | Eastport Entity | 10 |
| 9. | Martinez, Pedro | (Trulaia) | Reno Steers | 10 |
| 10. | Perry, Gaylord | (Theo_smith) | East Nashville Vinyl | 9 |
| 11. | Schilling, Curt | (KOOGS) | San Antonio Mustangs | 9 |
| 12. | Martinez, Pedro | (richgibson) | Kalamazoo CELERY PICKERS | 9 |
| 13. | Scott, Mike | (gibblets1973) | Eastport Entity | 9 |
| 14. | Whitney, Jim | (walle-1) | Montana Ducks | 9 |
| 15. | Koufax, Sandy | (wadesayles) | McDowell Miners | 9 |
| 16. | Walsh, Ed | (richgibson) | Harveys POOKAS | 9 |
| 17. | Starffin, Victor | (ajs) | GALVESTON SHRIMP | 9 |
| 18. | Fujimoto, Hideo | (filler) | Kansas Grasshoppers | 9 |
| 19. | Richard, J.R. | (mranastasia) | Charlotte Hornets | 9 |
| 20. | Gooden, Dwight | (walle-1) | San Diego Sharks | 9 |
| 21. | Sutton, Don | (Caphowdy504) | Springfield Troy McClures | 9 |
| 22. | Carlton, Steve | (Theo_smith) | East Nashville Vinyl | 9 |
| 23. | Walsh, Ed | (dynasty) | Milwaukee Skeletons | 9 |
| 24. | Maddux, Greg | (idesofmarch) | Cross Timbers Rattlers | 9 |
| 25. | Gibson, Bob | (kingstreet) | Singapore Slingers | 9 |
| 26. | Millwood, Kevin | (Cg4177) | Anytown Crooks | 9 |
| 27. | Downing, Al | (skooler1) | Columbus Clippers | 9 |
| 28. | Blue, Vida | (teamkev24) | Dodgy Mates | 9 |
| 29. | Maddux, Greg | (befulton) | Old Dogs | 9 |
| 30. | Johnson, Walter | (Jackfactor) | Humboldt Broncos | 9 |
| 31. | Gibson, Bob | (richp) | LOUISIANA CAJINS | 9 |
| 32. | Gooden, Dwight | (befulton) | NC Black Dogs | 9 |
| 33. | Gibson, Bob | (plpl512) | Edmonton Cracker Cats | 9 |
| 34. | Martinez, Pedro | (filler) | Boston Bees | 9 |
| 35. | Tiant, Luis | (farmerfrank88) | Braddock Lightning Dream | 9 |
| 36. | Guidry, Ron | (filler8) | Charlotte Spiders | 9 |
| 37. | Maddux, Greg | (Mvos18) | Milwaukee Skeletons | 9 |
| 38. | Palmer, Jim | (dynasty) | Arizona Suns | 9 |
| 39. | Krukow, Mike | (DaveH) | Ladson Cougars | 9 |
| 40. | Walsh, Ed | (walle-1) | Utah Nightmares | 9 |
| 41. | Sutton, Don | (chaaad) | UConn Huskies | 9 |
| 42. | Clemens, Roger | (aaabob) | Windsor White's Other I's | 9 |
| 43. | Starffin, Victor | (walle-1) | Phoenix Dragons | 9 |
| 44. | Tiant, Luis | (Mortamar1966) | Kansas City Monarchs | 9 |
| 45. | Ryan, Nolan | (walle-1) | Boulder Cavemen | 9 |
| 46. | Joss, Addie | (WorcWarr) | Worcester Warriors | 9 |
| 47. | Mussina, Mike | (filler) | Carolina Bulldogs | 8 |
| 48. | Koufax, Sandy | (filler8) | Phoenix Dragons | 8 |
| 49. | Rogers, Steve | (gibblets1973) | Ellston Eagles | 8 |
| 50. | Valenzuela, Fernando | (filler8) | Carolina Bulldogs | 8 |
