Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Homers Allowed)
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. | Koufax, Sandy | (dunroche) | Chenango Wolves | 70 |
| 2. | Cole, Gerrit | (dunroche) | Washington Racin' Rebels | 68 |
| 3. | Koufax, Sandy | (dunroche) | Tuvalu Copras | 67 |
| 4. | Kluber, Corey | (dunroche) | Chenango Wolves | 64 |
| 5. | McLain, Denny | (dunroche) | Chenango Wolves | 64 |
| 6. | Byrd, Paul | (filler) | Columbia Vikings | 63 |
| 7. | Gibson, Bob | (dunroche) | Tuvalu Copras | 62 |
| 8. | Koufax, Sandy | (dunroche) | Ohio Stealers | 62 |
| 9. | Haren, Dan | (dynasty) | Indiana Cubs | 62 |
| 10. | Moyer, Jamie | (filler8) | Texas Tornado | 61 |
| 11. | Greinke, Zack | (filler) | Simsbury Cats | 61 |
| 12. | Colon, Bartolo | (Abb) | Marietta Tomahawks | 60 |
| 13. | McLain, Denny | (dunroche) | Nevada Racin' Rebels | 60 |
| 14. | Marichal, Juan | (fuzzbox13) | All-Valley Buzz | 60 |
| 15. | Marichal, Juan | (dunroche) | Ohio Stealers | 60 |
| 16. | Sabathia, CC | Jersey Jets | 60 | |
| 17. | Sheets, Ben | (brian4656) | El Paso Masters | 60 |
| 18. | Wood, Wilbur | (filler) | Desert City Drifters | 60 |
| 19. | Iwakuma, Hisashi | Indiana Orioles | 59 | |
| 20. | Lilly, Ted | Cooperstown Poodles | 59 | |
| 21. | Marichal, Juan | (dunroche) | Toledo Mudhens | 59 |
| 22. | Radke, Brad | (dynasty) | who let the wierdos out | 59 |
| 23. | Lilly, Ted | (filler2) | Tallahassee Lumberjacks | 58 |
| 24. | Tanana, Frank | (babyave1) | Naples Lakers | 58 |
| 25. | Santana, Johan | (dunroche) | Nevada Racin' Rebels | 58 |
| 26. | Seaver, Tom | (vaughnk003) | CAROLINA COW TIPPERS | 58 |
| 27. | Wood, Wilbur | (Lincoln1488) | Missouri Celts | 58 |
| 28. | Marichal, Juan | (HoustonCougar) | Houston Colt 45's | 58 |
| 29. | Neagle, Denny | (dynasty) | American Eagles | 58 |
| 30. | Marichal, Juan | (Majestic44) | San diego Bulldogs | 58 |
| 31. | Cole, Gerrit | (dunroche) | Toledo Mudhens | 57 |
| 32. | Koufax, Sandy | (ranger) | FRANKLIN BENJAMINS | 57 |
| 33. | Kluber, Corey | (Slothmonkey) | Cleveland Cliffs | 57 |
| 34. | Marichal, Juan | Capital CIty Colonels | 57 | |
| 35. | Kershaw, Clayton | (Myunclepunk) | Chicago Pounders | 57 |
| 36. | McNally, Dave | (dunroche) | Detroit Tigers | 57 |
| 37. | Jenkins, Fergie | (filler) | MALIBU SURFERS | 57 |
| 38. | Greinke, Zack | (dynasty) | Akron RubberDucks | 57 |
| 39. | Tanaka, Masahiro | (Cunnythumber) | Des Moines Dumbos | 57 |
| 40. | Weaver, Jered | (dynasty) | Alabama Aces | 57 |
| 41. | Perez, Pascual | (chapman) | Miami Roid Rage | 57 |
| 42. | Scott, Mike | (BobbyCarnes) | Louisville Devils | 57 |
| 43. | Kershaw, Clayton | (abcjz) | Minnesota Froggers | 57 |
| 44. | Vazquez, Javier | (filler) | Chilliwack Cougars | 57 |
| 45. | Marichal, Juan | (richgibson) | Cheating ASTROBALLS | 57 |
| 46. | Kluber, Corey | (dunroche) | Ohio Stealers | 56 |
| 47. | Lee, Cliff | Terrytown Tabbies | 56 | |
| 48. | Santana, Johan | (coachmcs) | 1398 Archers of Love | 56 |
| 49. | Kershaw, Clayton | (dunroche) | Keystone 9280’s | 56 |
| 50. | Myers, Brett | (filler8) | Oregon Outlaws | 56 |
