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. | McCatty, Steve | Madagascar Mostly Nubile | 306.0 | |
| 2. | Sweeney, Charlie | (gibblets1973) | Gander Flyers | 305.2 |
| 3. | Blue, Vida | (kingstreet) | Singapore Slingers | 303.2 |
| 4. | Walsh, Ed | (Fungoking) | PHILADELPHIA STATESMEN | 303.2 |
| 5. | Alexander, Pete | (Shpennymons) | Transylvania Tigers | 303.2 |
| 6. | Walsh, Ed | (rainman) | Mudville Nine | 303.2 |
| 7. | Johnson, Walter | (gibblets1973) | Petite Forte Panthers | 302.0 |
| 8. | Blue, Vida | (tjm) | Connecticut Colts | 301.2 |
| 9. | Koufax, Sandy | (vanderj6993) | Fila Eskimos | 301.1 |
| 10. | Gooden, Dwight | (filler) | Delaware County Team Delco | 301.0 |
| 11. | Koufax, Sandy | (stevenray) | Brooklyn Bulls | 300.2 |
| 12. | Gooden, Dwight | (filler2) | Baltimore Orioles | 300.1 |
| 13. | Tiant, Luis | (gibblets1973) | Bakersfield Hell's Satans | 300.1 |
| 14. | Sutton, Don | (gibblets1973) | Badger Bulldogs | 300.0 |
| 15. | Chandler, Spud | Winter Weather | 299.2 | |
| 16. | Gibson, Bob | (catefigcas) | Brookings Harbor DirtBags | 299.2 |
| 17. | McNally, Dave | (chaaad) | Schenectady Mohawk Giants | 299.2 |
| 18. | Pfiester, Jack | (bravesman) | Shreveport Spiders | 299.2 |
| 19. | Walsh, Ed | (bravesman) | Shreveport Spiders | 299.1 |
| 20. | Walsh, Ed | (bravesman) | Shreveport Scorpions | 299.0 |
| 21. | Ford, Russ | (richgibson) | michigan RAnTERS | 299.0 |
| 22. | Walsh, Ed | (nschnippel) | Ragging Bulls | 299.0 |
| 23. | Walsh, Ed | Scotland SEA DRAGONS | 298.2 | |
| 24. | Walsh, Ed | (dynasty) | Singapore Blue Jays | 298.2 |
| 25. | Marichal, Juan | (vanderj6993) | Pittsburgh Lumber Company | 298.2 |
| 26. | Walsh, Ed | (dshearer) | Salt Lake Crabs | 298.0 |
| 27. | Hecker, Guy | (gibblets1973) | Gander Flyers | 298.0 |
| 28. | Gibson, Bob | (gibblets1973) | St. John's Saints | 298.0 |
| 29. | Walsh, Ed | (tgbsbl1967) | Portland Bengals | 297.2 |
| 30. | Walsh, Ed | (Mrcash3) | East Coast Pirates | 297.2 |
| 31. | Sweeney, Charlie | (bravesman) | Shreveport Spiders | 297.1 |
| 32. | Walsh, Ed | (mattholland1975) | Granite State Heat | 297.1 |
| 33. | Blue, Vida | (DaveH) | Ladson Cougars | 297.1 |
| 34. | Koufax, Sandy | (Artinshki) | B Bonds Bombers | 297.0 |
| 35. | Hecker, Guy | (gibblets1973) | Gander Flyers | 297.0 |
| 36. | Clemens, Roger | (vanderj6993) | Hawaii Eruptions | 297.0 |
| 37. | Marichal, Juan | (Iamcota) | Londonderry LIzard Kings | 296.2 |
| 38. | Gibson, Bob | (rfb60609) | Middletown Monarchs | 296.2 |
| 39. | Kershaw, Clayton | (rainman) | Lost City Sleestaks | 296.1 |
| 40. | McNally, Dave | (vanderj6993) | Fila Eskimos | 296.1 |
| 41. | Walsh, Ed | (richgibson) | michigan RAnTERS | 296.1 |
| 42. | Johnson, Walter | (robmb) | Ocean City Orioles | 296.1 |
| 43. | Walsh, Ed | Albuquerque Eskimos | 296.1 | |
| 44. | Walsh, Ed | (filler) | Beloit Snappers | 296.0 |
| 45. | Walsh, Ed | (hayzess) | Santiam SNAKE | 296.0 |
| 46. | Hecker, Guy | (boetto) | Procopian Friars | 296.0 |
| 47. | Joss, Addie | (Shpennymons) | Transylvania Tigers | 296.0 |
| 48. | Johnson, Walter | (mason) | Chattanooga Colts | 296.0 |
| 49. | Hecker, Guy | (Fungoking) | PHILADELPHIA STATESMEN | 296.0 |
| 50. | Marichal, Juan | (robmb) | Brooklyn Dodgers | 296.0 |