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. | Simmons, Andrelton | (comriker) | Ashland Aviators | 169 |
| 2. | Simmons, Andrelton | (filler) | Dallas Mustangs | 153 |
| 3. | Simmons, Andrelton | (dynasty) | Montana Ducks | 151 |
| 4. | Simmons, Andrelton | (gibblets1973) | Grey River NL Salmon | 147 |
| 5. | Simmons, Andrelton | (mattholland1975) | Bar Harbor Lobsters | 146 |
| 6. | Simmons, Andrelton | (Stevenray) | Brooklyn Bulls | 146 |
| 7. | Frisch, Frankie | Salem Demons | 145 | |
| 8. | Simmons, Andrelton | Arizona Suns | 143 | |
| 9. | Simmons, Andrelton | (sammy-z) | Baltimore BBCORioles | 143 |
| 10. | Turner, Terry | (GLOBEXcorp) | GLOBEX Corporation | 143 |
| 11. | Simmons, Andrelton | (mattholland1975) | Bozeman Beetles | 143 |
| 12. | Simmons, Andrelton | (ScottCornelius) | London Yardbirds | 143 |
| 13. | Simmons, Andrelton | (sheikyerboudi) | Away Team Redshirts | 142 |
| 14. | Simmons, Andrelton | (jrobandsteal) | New York Demons | 142 |
| 15. | Simmons, Andrelton | (Wileydog97) | Raleigh Cowboys | 142 |
| 16. | Simmons, Andrelton | (salukisam) | Peel Away | 141 |
| 17. | Simmons, Andrelton | (gibblets1973) | Braemere Blue Dolphins | 141 |
| 18. | Turner, Terry | (Fungoking) | Litchfield Lumber Co. | 140 |
| 19. | Simmons, Andrelton | (gibblets1973) | Grand Beach NL Gibbon | 140 |
| 20. | Simmons, Andrelton | (Mortamar1966) | Kansas City Monarchs | 140 |
| 21. | Simmons, Andrelton | (Mortamar1966) | Homestead Grays | 140 |
| 22. | Simmons, Andrelton | (Mortamar1966) | Kansas City Monarchs | 140 |
| 23. | Simmons, Andrelton | (TMNT740) | Utah Nightmares | 140 |
| 24. | Simmons, Andrelton | (Willy1717) | Hilton Head Hobos | 139 |
| 25. | Simmons, Andrelton | (filler) | Boulder Cavemen | 139 |
| 26. | Simmons, Andrelton | (Mortamar1966) | Horseshoe Falls Bagniokeepers | 139 |
| 27. | Simmons, Andrelton | San Diego Sharks | 139 | |
| 28. | Simmons, Andrelton | (skooler1) | Mexico City Serpents | 138 |
| 29. | Simmons, Andrelton | (thadjhall) | Manhattan Darts 7 | 138 |
| 30. | Simmons, Andrelton | (filler8) | Milwaukee Skeletons | 138 |
| 31. | Simmons, Andrelton | (filler8) | Arizona Suns | 138 |
| 32. | Simmons, Andrelton | (Mrploppie) | Montana Ducks | 137 |
| 33. | Simmons, Andrelton | (Mortamar1966) | Kansas City Monarchs | 137 |
| 34. | Simmons, Andrelton | (Denniskitts1313) | Backyard Brawlers | 137 |
| 35. | Simmons, Andrelton | (filler8) | Dallas Mustangs | 137 |
| 36. | Simmons, Andrelton | (gibblets1973) | North River Night Hawks | 137 |
| 37. | Smith, Ozzie | (filler) | Seattle Sloths | 137 |
| 38. | Simmons, Andrelton | (nycubsfan) | Huntsville Bearkats | 136 |
| 39. | Simmons, Andrelton | (Cg4177) | Newark Eagles | 136 |
| 40. | Simmons, Andrelton | (Artinshki) | Base Ball Homers | 136 |
| 41. | Simmons, Andrelton | (Stevenray) | Brooklyn Broncos | 136 |
| 42. | Fletcher, Art | (gibblets1973) | Grand Falls Grey Geese | 136 |
| 43. | Simmons, Andrelton | (richgibson) | Grand INQUISITORS | 136 |
| 44. | Turner, Terry | (gibblets1973) | Gander Flyers | 136 |
| 45. | Simmons, Andrelton | (jamin) | Chester Springs Menjai | 135 |
| 46. | Simmons, Andrelton | (Crackpot) | Miskatonic Mythos | 135 |
| 47. | Simmons, Andrelton | (chaaad) | Mexico City Diablos Rojo | 135 |
| 48. | Smith, Ozzie | (bostontex24) | Boston Lions | 135 |
| 49. | Simmons, Andrelton | (richgibson) | Specters Haunting Europe | 135 |
| 50. | Simmons, Andrelton | (filler) | Nevada Snakes | 135 |
