Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Innings)
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 | Fujiyoshida Shining Wizards | 307.2 | |
| 2. | Fujimoto, Hideo | (filler8) | Iowa Pigs | 306.2 |
| 3. | Fujimoto, Hideo | (duli) | Kansai Locomotives | 303.0 |
| 4. | Keefe, Tim | Some Team | 302.2 | |
| 5. | Gibson, Bob | (coolie) | Peninsula Panthers | 302.2 |
| 6. | Rogers, Steve | (gibblets1973) | Dunnville Diablos | 302.0 |
| 7. | Martinez, Pedro | (richgibson) | Detroit SWOC | 300.0 |
| 8. | Rogers, Steve | (gibblets1973) | East End Eagle | 300.0 |
| 9. | Sutton, Don | (gibblets1973) | Badger Bulldogs | 300.0 |
| 10. | Walsh, Ed | (walle-1) | Utah Nightmares | 299.2 |
| 11. | Starffin, Victor | (sheikyerboudi) | 5.6.7.8'S Bomb The Twist | 299.2 |
| 12. | Fujimoto, Hideo | (grantmoyer) | Yokohama Osprey | 299.2 |
| 13. | Maddux, Greg | (Trulaia) | Boston Bees | 299.2 |
| 14. | Fujimoto, Hideo | (Yankee) | Iriomote Cats | 298.0 |
| 15. | McLain, Denny | (filler8) | Chicago Reapers | 298.0 |
| 16. | Martinez, Pedro | (dynasty) | San Diego Sharks | 298.0 |
| 17. | McNally, Dave | (ExposMe) | Fila Eskimos II | 297.1 |
| 18. | Vance, Dazzy | (gibblets1973) | Brigus Broncos | 297.1 |
| 19. | Starffin, Victor | (gibblets1973) | Bally Haly Bay Stars | 297.1 |
| 20. | Starffin, Victor | Salem Demons | 297.0 | |
| 21. | Hecker, Guy | (gibblets1973) | Gander Flyers | 297.0 |
| 22. | Tanana, Frank | (gibblets1973) | East End Eagle | 296.2 |
| 23. | Fujimoto, Hideo | (filler) | Boulder Cavemen | 296.2 |
| 24. | McNally, Dave | (ExposMe) | Fila Eskimos II | 296.1 |
| 25. | Martinez, Pedro | (babyave1) | Boston BigHats | 296.1 |
| 26. | Johnson, Walter | (GoYanks1981) | Arizona Suns | 296.1 |
| 27. | Marichal, Juan | (filler) | Arizona Suns | 296.0 |
| 28. | Carlton, Steve | (gibblets1973) | Badger Bulldogs | 296.0 |
| 29. | Fujimoto, Hideo | (gibblets1973) | Bally Haly Bay Stars | 296.0 |
| 30. | Gooden, Dwight | (gibblets1973) | Portland Creek Pirates | 295.1 |
| 31. | Guidry, Ron | (gibblets1973) | Rabbittown Rhino | 295.1 |
| 32. | Blue, Vida | (gibblets1973) | Ellston Eagles | 295.1 |
| 33. | Tiant, Luis | (filler) | Arizona Suns | 295.0 |
| 34. | Alexander, Pete | (dynasty) | Kentucky Horses | 295.0 |
| 35. | Gooden, Dwight | (teamkev24) | SANTANA GRIZZLES | 295.0 |
| 36. | Tiant, Luis | (Burrellfan1) | Jersey Shore BlueClaws | 294.2 |
| 37. | Tiant, Luis | (Burrellfan1) | Jersey Shore BlueClaws | 294.2 |
| 38. | Gibson, Bob | (coolie) | Peninsula Panthers | 294.2 |
| 39. | Gibson, Bob | (sheikyerboudi) | Excentrifugal Forz | 294.2 |
| 40. | Koufax, Sandy | (ExposMe) | Fila Eskimos II | 294.1 |
| 41. | Tiant, Luis | (gibblets1973) | St. John's Saints | 294.0 |
| 42. | Gooden, Dwight | (filler) | Dallas Mustangs | 294.0 |
| 43. | Seaver, Tom | (gibblets1973) | Swift Current NL Swords | 293.2 |
| 44. | Gibson, Bob | (walle-1) | Sacramento Lions | 293.2 |
| 45. | Perry, Gaylord | (Joshbonds25) | Worthy Adversaries | 293.2 |
| 46. | Sutton, Don | (walle-1) | Salem Demons | 293.2 |
| 47. | Gibson, Bob | Las Vegas Gladiators | 293.1 | |
| 48. | Starffin, Victor | (sheikyerboudi) | 5.6.7.8'S Bomb The Twist | 293.1 |
| 49. | Seaver, Tom | (gibblets1973) | East End Eagle | 293.0 |
| 50. | Vance, Dazzy | (morangslick) | Seattle Sloths | 293.0 |
