Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Defense)
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. | Belanger, Mark | (filler) | Charleston Giants | 9 |
| 2. | Belanger, Mark | (filler) | Baltimore Chop | 0 |
| 3. | Smith, Ozzie | (ClassicOs) | Baltimore Orioles | 1 |
| 4. | Smith, Ozzie | (sheikyerboudi) | St. Louis Perfectos | 1 |
| 5. | Belanger, Mark | (filler) | Kingston Colts | 0 |
| 6. | Fletcher, Art | 17-54-93 San Fran WillieBarry's | 0 | |
| 7. | Smith, Ozzie | (montgomerybrews) | Montgomery Brewsters | 2 |
| 8. | Smith, Ozzie | (michelb3514) | Iowa Corn Pickers | 1 |
| 9. | Simmons, Andrelton | (bschell90) | Mojave Desert Aces and 8's | 10 |
| 10. | Simmons, Andrelton | (ClassicOs) | Baltimore Orioles | 7 |
| 11. | Ripken, Cal | (bostontex24) | Boston Athletics | 20 |
| 12. | Smith, Ozzie | (dunroche) | Gary - Southshore RailCats | 1 |
| 13. | Smith, Ozzie | (cornliquor) | Lynchburg Jacks | 0 |
| 14. | Smith, Ozzie | (dunroche) | Carolina Mad Ducks | 1 |
| 15. | Frisch, Frankie | (dunroche) | Chicago Mighty Bulls | 5 |
| 16. | Fletcher, Art | (sheikyerboudi) | Tire World Red Tags | 2 |
| 17. | Frisch, Frankie | (namster) | Rivertown Vikings | 5 |
| 18. | Smith, Ozzie | (dunroche) | Washington Racin' Rebels | 0 |
| 19. | Smith, Ozzie | (dunroche) | Washington Racin' Rebels | 1 |
| 20. | Frisch, Frankie | (tgbbirch) | Union City Star Glazers | 4 |
| 21. | Smith, Ozzie | (dunroche) | Cleveland Indians | 1 |
| 22. | Smith, Ozzie | (dunroche) | Nevada Racin' Rebels | 1 |
| 23. | Banks, Ernie | (Nver4ever) | Orlando Cosmics | 26 |
| 24. | Turner, Terry | (michelb3514) | Iowa Corn Pickers | 0 |
| 25. | Frisch, Frankie | (Gate-mouth) | Humbolt 💰⚾ | 9 |
| 26. | Banks, Ernie | (Robhawkva) | Roanoke Renegades | 25 |
| 27. | Frisch, Frankie | (Bhgray) | Seattle Pilots | 11 |
| 28. | Robinson, Brooks | Baltimore Orioles | 6 | |
| 29. | Belanger, Mark | (Kruppe) | Forest City Orioles | 1 |
| 30. | Jones, Andruw | (Bhgray) | Providence Friars | 20 |
| 31. | Frisch, Frankie | (tgbbirch) | Quincy Low Riders | 3 |
| 32. | Banks, Ernie | (mmeler) | Toledo Nationals | 24 |
| 33. | Frisch, Frankie | (dunroche) | Cleveland Indians | 8 |
| 34. | Belanger, Mark | (GACKMAN) | Carolina Hurricane | 1 |
| 35. | Frisch, Frankie | (WorcWarr) | Worcester Warriors | 3 |
| 36. | Belanger, Mark | (GusPC13) | Oshawa Barons | 2 |
| 37. | Turner, Terry | (dunroche) | Green Bay Spirit | 2 |
| 38. | Frisch, Frankie | (michelb3514) | Iowa Corn Pickers | 3 |
| 39. | Smith, Ozzie | (dunroche) | Nevada Racin' Rebels | 1 |
| 40. | Smith, Ozzie | (michelb3514) | Iowa Corn Pickers | 1 |
| 41. | Belanger, Mark | (kingstreet) | Singapore Cowboys | 2 |
| 42. | Smith, Ozzie | (dunroche) | Carolina Racin' Wrens | 1 |
| 43. | Smith, Ozzie | (kingstreet) | Singapore Swingers | 0 |
| 44. | Frisch, Frankie | (tgbsbl1967) | Camp Hill Suburbanites | 7 |
| 45. | Smith, Ozzie | (dynasty) | Chittenango Wizards of Oz | 1 |
| 46. | Smith, Ozzie | (michelb3514) | Iowa Corn Pickers | 2 |
| 47. | Frisch, Frankie | (paranoid) | Las Vegas Screamin Eagles | 2 |
| 48. | Jones, Andruw | (Slippingjimmy) | Chittenango Wizards of Oz | 20 |
| 49. | Frisch, Frankie | (tgbbirch) | Birchville pigs | 7 |
| 50. | Erstad, Darin | (michelb3514) | Iowa Corn Pickers | 6 |