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. | Bundy, Dylan | (Schvitz) | Westside Sweatmen | 67 |
| 2. | Morris, Jack | (tsiegler) | Mayport Sharks | 65 |
| 3. | Berrios, Jose | (Bsinco) | Justin Turner Overdrive | 61 |
| 4. | Fulmer, Michael | (davrogbro62) | Baffin Island Tiger Seals | 60 |
| 5. | Young, Irv | (salukisam) | Q City Quake | 58 |
| 6. | Brown, Kevin | (mr_mojo_risin) | Reykjavik Rooks | 58 |
| 7. | Reynolds, Shane | (filler) | Minneapolis Millers | 58 |
| 8. | Loaiza, Esteban | (Brad7596) | Ohio State Buckeyes | 58 |
| 9. | Millwood, Kevin | (ChadB) | Marianao Tigers | 58 |
| 10. | Viola, Frank | (filler) | camden town bankrobbers | 57 |
| 11. | Gooden, Dwight | (PlayBall2020) | Ford Mustangs | 57 |
| 12. | Cuellar, Mike | (metfan1) | Bartonsville Pumas | 57 |
| 13. | Hudson, Daniel | (habsco) | Grand Forks Piggly Wigglys | 57 |
| 14. | Blue, Vida | (iamcota) | Knapps Station Knee Slappers | 57 |
| 15. | Gibson, Bob | (mavsfan41) | Dallas Cowboys | 57 |
| 16. | Greinke, Zack | (Math_God) | New Jersey Jackals | 57 |
| 17. | Gibson, Bob | (FlowMontana) | Washoe County Chiefs | 57 |
| 18. | Morris, Jack | (metfan1) | Bartonsville Pumas | 57 |
| 19. | Strasburg, Stephen | (jadler) | Amsterdam Crocs | 56 |
| 20. | Bunker, Wally | (dynasty) | Florida Panthers | 56 |
| 21. | Maddux, Greg | (dynasty) | Chicago Sting | 56 |
| 22. | Hunter, Catfish | Angers Froggies | 56 | |
| 23. | Higuera, Teddy | (doughboys) | Caldwell BOMBERS | 56 |
| 24. | Kershaw, Clayton | (Sportsguru2020) | Santee Spartans | 56 |
| 25. | James, Josh | (habsco) | Tempe Monarchs | 56 |
| 26. | Johnson, Randy | (sytsmab) | Trong Thu | 56 |
| 27. | Smoltz, John | (boomba) | Albuquerque Blue Crystals | 56 |
| 28. | Weaver, Jered | (devil12218) | DeGrom Nom Nom | 56 |
| 29. | Pettitte, Andy | (ressien) | Washington Huskies | 56 |
| 30. | Hahn, Noodles | (Gaberino) | Sierra Nevada Quicksilvers | 56 |
| 31. | Sutton, Don | (annabeth) | Guismaras Matamis Mango | 56 |
| 32. | Perez, Odalis | (maturk34) | Moose Jaw Catastrophe | 56 |
| 33. | Blyleven, Bert | (Joeyd8807) | PHILADELPHIA EAGLES | 56 |
| 34. | Strasburg, Stephen | (hall5152002) | Hallsville Hornets | 56 |
| 35. | Young, Irv | (bishop427) | Las Vegas Cheap Thrills | 56 |
| 36. | Castillo, Luis | (greenmachine) | Toronto Buds | 55 |
| 37. | Hudson, Tim | Erie Fighters | 55 | |
| 38. | Lee, Cliff | (BBG1972) | Nashville Salamanders | 55 |
| 39. | Chesbro, Jack | (filler) | Tokyo Shinobis | 55 |
| 40. | Morton, Charlie | (DelBaseballFan) | Tulsa Terriers | 55 |
| 41. | Bieber, Shane | (gnuthey) | Pink Land Power Hitters | 55 |
| 42. | Blyleven, Bert | (JoeyT2870) | Terrace Tarantulas | 55 |
| 43. | Young, Irv | (LDJS1947) | WOODSTONE WARRIORS | 55 |
| 44. | Colon, Bartolo | (sjcoelho) | Peoria Peckers | 55 |
| 45. | Brown, Kevin | (Tiger) | Santa Cruz Banana Slugs | 55 |
| 46. | Blanton, Joe | (filler) | Gulf Coast Cavemen | 55 |
| 47. | Brown, Kevin | (erikl415) | Detroit Mustangs | 55 |
| 48. | Brown, Kevin | (Bluesig) | Eñorole War Birds | 55 |
| 49. | Schilling, Curt | (PARATROOPER22) | JACKSONVILLE JETS | 55 |
| 50. | Maddux, Greg | (Keebler_73) | Montreal Old School | 55 |