Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Slugging)
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. | Schneider, Davis | (brenzini) | Oakmont Yankees | .918 |
| 2. | Carpenter, Matt | (BAR23) | Washington Co. Wasps | .872 |
| 3. | Carpenter, Matt | (Rnp11) | Vegas Vics | .862 |
| 4. | Carpenter, Matt | (bph1978) | Detroit Dumpsters 2 | .857 |
| 5. | Carpenter, Matt | (hanson) | Ramsey County Rampage | .851 |
| 6. | Carpenter, Matt | (hanson) | Ramsey County Rampage | .851 |
| 7. | Carpenter, Matt | (hanson) | Ramsey County Rampage | .851 |
| 8. | Carpenter, Matt | (hanson) | Ramsey County Rampage | .851 |
| 9. | Carpenter, Matt | (hanson) | Ramsey County Rampage | .851 |
| 10. | Carpenter, Matt | (hanson) | Ramsey County Rampage | .851 |
| 11. | Carpenter, Matt | (maharacer) | New York Metro | .851 |
| 12. | Carpenter, Matt | (dynasty) | Francisco French Fry | .845 |
| 13. | Schneider, Davis | (ColinBoucher) | DoppleHead BobbleGängers | .837 |
| 14. | Carpenter, Matt | (jim2miller) | Elkhart Blue Blazers | .836 |
| 15. | Carpenter, Matt | (Texashorns2023) | UU Unicorns | .833 |
| 16. | Carpenter, Matt | (ColinBoucher) | Rancho Cucamonga Quakes | .830 |
| 17. | Carpenter, Matt | (filler8) | Oakmont Yankees | .827 |
| 18. | Bonds, Barry | (WorcWarr) | Worcester Warriors | .826 |
| 19. | Carpenter, Matt | Atlanta Sloths | .826 | |
| 20. | Schneider, Davis | (ColinBoucher) | Lordish ShockaBras | .825 |
| 21. | Hoskins, Rhys | (lasershow) | Iowa Cornhuskers | .824 |
| 22. | Schneider, Davis | (ColinBoucher) | Thago- Mizers | .820 |
| 23. | Bonds, Barry | (Trulaia) | Revenge of Samson | .819 |
| 24. | Carpenter, Matt | (Texashorns2023) | South Park Cows | .819 |
| 25. | Carpenter, Matt | (ColinBoucher) | Bishop Sycamore HS Vagabonds | .819 |
| 26. | Carpenter, Matt | (filler) | Warner Robins Renegades | .818 |
| 27. | Carpenter, Matt | (ColinBoucher) | Dunning Kruger Dotards | .817 |
| 28. | Carpenter, Matt | (bnewman58) | Macon Friends | .817 |
| 29. | Carpenter, Matt | (GpaDawg) | Rochester River Hawks | .817 |
| 30. | Carpenter, Matt | (Charles_graf) | New York Mets | .816 |
| 31. | Carpenter, Matt | (Majestic44) | Naples Mustangs | .816 |
| 32. | Carpenter, Matt | (ColinBoucher) | Hesi Pull-up Jimbos | .816 |
| 33. | Carpenter, Matt | (angelsfan27) | Detroit Mechanics | .813 |
| 34. | Carpenter, Matt | (ColinBoucher) | ‘Sota BobbleVikes | .812 |
| 35. | Carpenter, Matt | (ColinBoucher) | Gunung Padang MountainHoppers | .812 |
| 36. | Carpenter, Matt | (dgeorgi) | STEPPIN WOLF MAGIC CARPET RIDE | .810 |
| 37. | Carpenter, Matt | (Matt11791) | Boston Brewers | .809 |
| 38. | Carpenter, Matt | (dynasty) | LANDON LIONS | .808 |
| 39. | Carpenter, Matt | (DelBaseballFan) | Rehoboth Rebels | .807 |
| 40. | Schneider, Davis | (Alfc10) | Tiny Adorable Hoppy Froggies | .807 |
| 41. | Bonds, Barry | (BAR23) | Bloomington Blue Bombers | .805 |
| 42. | Carpenter, Matt | (gpsman) | Detroit Tigers | .805 |
| 43. | Carpenter, Matt | (ColinBoucher) | Relentlessly Competent | .805 |
| 44. | Carpenter, Matt | (Doughboys) | California Bears | .804 |
| 45. | Bonds, Barry | (ekspress) | Baltimore Orioles | .804 |
| 46. | Carpenter, Matt | (hanson) | MISSOURI MULES | .803 |
| 47. | Bonds, Barry | (Artinshki) | Base Ball Classics | .803 |
| 48. | Carpenter, Matt | (Bluejays2) | TT Twirls | .802 |
| 49. | Carpenter, Matt | Cebb Henne | .802 | |
| 50. | Carpenter, Matt | All-Valley North Stars | .801 |
