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 | (Ragingsol) | Madagascar Mostly Nubile | 306.0 |
| 2. | Sweeney, Charlie | (gibblets1973) | Gander Flyers | 305.2 |
| 3. | Koufax, Sandy | (gibblets1973) | St. John's Saints | 305.2 |
| 4. | Alexander, Pete | (Shpennymons) | Transylvania Tigers | 303.2 |
| 5. | Walsh, Ed | (Fungoking) | PHILADELPHIA STATESMEN | 303.2 |
| 6. | Walsh, Ed | (mrfantasy) | Wisconsin Shepherds | 303.2 |
| 7. | Blue, Vida | (kingstreet) | Singapore Slingers | 303.2 |
| 8. | Sutton, Don | (kingstreet) | Singapore Express | 303.1 |
| 9. | Johnson, Walter | (gibblets1973) | Petite Forte Panthers | 302.0 |
| 10. | Blue, Vida | (DaveH) | Ladson Cougars | 301.2 |
| 11. | Sutton, Don | (filler) | Annapolis Eagles | 301.2 |
| 12. | Koufax, Sandy | (vanderj6993) | Fila Eskimos | 301.1 |
| 13. | Gooden, Dwight | (filler) | Delaware County Team Delco | 301.0 |
| 14. | Koufax, Sandy | Arizona Legends | 300.2 | |
| 15. | Gooden, Dwight | (ClassicOs) | Baltimore Orioles | 300.1 |
| 16. | Tiant, Luis | (gibblets1973) | Bakersfield Hell's Satans | 300.1 |
| 17. | Chandler, Spud | (Chasmys) | Winter Weather | 299.2 |
| 18. | McNally, Dave | (chaaad) | Schenectady Mohawk Giants | 299.2 |
| 19. | Perry, Gaylord | (kingstreet) | Singapore Slingers | 299.2 |
| 20. | Gibson, Bob | (catefigcas) | Brookings Harbor DirtBags | 299.2 |
| 21. | Pfiester, Jack | El Paso Chihuahuas | 299.2 | |
| 22. | Walsh, Ed | El Paso Chihuahuas | 299.1 | |
| 23. | Ford, Russ | (dynasty8) | michigan patriots | 299.0 |
| 24. | Walsh, Ed | (bravesman) | Shreveport Scorpions | 299.0 |
| 25. | Walsh, Ed | Change Name | 299.0 | |
| 26. | Walsh, Ed | (cubanlou) | Singapore Blue Jays | 298.2 |
| 27. | Walsh, Ed | Tri-City Dust Devils | 298.2 | |
| 28. | Walsh, Ed | (JohnHeidy) | Bejou Blues | 298.1 |
| 29. | Ford, Russ | (michelb3514) | Iowa Corn Pickers | 298.1 |
| 30. | Hecker, Guy | (gibblets1973) | Gander Flyers | 298.0 |
| 31. | Gibson, Bob | (gibblets1973) | St. John's Saints | 298.0 |
| 32. | Walsh, Ed | (dshearer) | Salt Lake Crabs | 298.0 |
| 33. | Perry, Gaylord | (Hendu42) | Reno Singers | 298.0 |
| 34. | Marichal, Juan | (Wolfpack80) | Lex Vegas Wildcats | 298.0 |
| 35. | Walsh, Ed | (kingstreet) | Singapore Slingers | 298.0 |
| 36. | Walsh, Ed | (LegitSnack23) | Boston Bees | 297.2 |
| 37. | Boyle, Henry | (philtomney) | Providence Greys | 297.2 |
| 38. | Walsh, Ed | (tgbsbl1967) | Portland Bengals | 297.2 |
| 39. | Sweeney, Charlie | El Paso Chihuahuas | 297.1 | |
| 40. | Blue, Vida | (DaveH) | Ladson Cougars | 297.1 |
| 41. | Walsh, Ed | Maryland Crab Cakes | 297.1 | |
| 42. | Clemens, Roger | (vanderj6993) | Hawaii Eruptions | 297.0 |
| 43. | Koufax, Sandy | (dunroche) | SoCal SurfDawgs 🥎 | 297.0 |
| 44. | Marichal, Juan | (Iamcota) | Londonderry LIzard Kings | 296.2 |
| 45. | Gibson, Bob | (robmb) | Fort Lee Generals | 296.2 |
| 46. | Wilson, Don | (DaveH) | Ladson Cougars | 296.2 |
| 47. | Martinez, Pedro | (BUCKLEYRM) | That 70’s Team | 296.2 |
| 48. | Walsh, Ed | (fps1956) | Albuquerque Eskimos | 296.1 |
| 49. | Kershaw, Clayton | Sun City Islanders | 296.1 | |
| 50. | Walsh, Ed | (dynasty8) | michigan patriots | 296.1 |