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. | Morris, Jack | (markphip) | Midvale Creeps | 65 |
| 2. | Haren, Dan | (filler) | RHODE ISLAND Shark Bite | 63 |
| 3. | Shields, James | (finalbody) | Miami Cats | 62 |
| 4. | Jenkins, Fergie | (dynasty) | Big papa Kekumbas | 61 |
| 5. | Berrios, Jose | (filler) | Richmond Rebels | 61 |
| 6. | Blue, Vida | (WorcWarr) | Worcester Warriors | 60 |
| 7. | Drysdale, Don | (jpotter14) | Esteli Northern Train | 59 |
| 8. | Plesac, Zach | Toronto Hawks | 58 | |
| 9. | Greinke, Zack | (PicklePunk20) | Kenora Thistles | 58 |
| 10. | Gonzales, Marco | Cleveland Indians | 58 | |
| 11. | Millwood, Kevin | (bnewman58) | Havana Snack | 58 |
| 12. | Weaver, Jered | (babyave1) | York Angels | 58 |
| 13. | Koufax, Sandy | (jojomia) | South Dakota Partyboys | 58 |
| 14. | Young, Irv | (dynasty) | Keezletown Moonshiners | 58 |
| 15. | Hunter, Catfish | (WorcWarr) | Worcester Warriors | 58 |
| 16. | Reynolds, Shane | Minneapolis Millers | 58 | |
| 17. | Plesac, Zach | Cleveland Indians | 58 | |
| 18. | Loaiza, Esteban | (filler) | Ohio State Buckeyes | 58 |
| 19. | Carpenter, Chris | (TramFan) | MILLERSVILLE GREY WOLVES | 58 |
| 20. | Viola, Frank | (filler8) | camden town bankrobbers | 57 |
| 21. | deGrom, Jacob | (filler2) | BB Bolts | 57 |
| 22. | DeSclafani, Anthony | BB Bison | 57 | |
| 23. | Colon, Bartolo | (filler) | san diego Chargers | 57 |
| 24. | Hunter, Catfish | (bostontex24) | Boston Celtics | 57 |
| 25. | Hudson, Daniel | (TrustInBill) | Pembroke Pigs | 57 |
| 26. | Gibson, Bob | (zmessler) | Milwaukee Moo | 57 |
| 27. | Gibson, Bob | (filler) | Vermont Mutts | 57 |
| 28. | Hendricks, Kyle | (donnpall) | Las Vegas Sun Sox | 57 |
| 29. | DeSclafani, Anthony | (Sidneypointers) | Sidney K9s | 57 |
| 30. | Morris, Jack | SOUTH BEND HELLCATS | 57 | |
| 31. | Chesbro, Jack | (filler) | Provo Vikings | 57 |
| 32. | Blue, Vida | (iamcota) | Knapps Station Knee Slappers | 57 |
| 33. | Viola, Frank | (speedymjb) | Ballantine Blasts | 57 |
| 34. | Cuellar, Mike | (54pete54) | Grimsby Gorillas | 57 |
| 35. | Greinke, Zack | (coachmcs) | Scottsdale Sun Devils | 57 |
| 36. | Gooden, Dwight | (tgbsbl1967) | Newberry Hitmen | 57 |
| 37. | Kershaw, Clayton | (donnpall) | Las Vegas Sun Sox | 57 |
| 38. | Greinke, Zack | (Gradster10) | Madison Mallards | 57 |
| 39. | Lynn, Lance | (doittoitlars) | Kentucky HeadHunters | 56 |
| 40. | Strasburg, Stephen | (joemcg) | Desert Jockeys | 56 |
| 41. | Kershaw, Clayton | (filler) | San Antonio Cowboys | 56 |
| 42. | Blyleven, Bert | (Shpennymons) | Macungie Blue Angels | 56 |
| 43. | Schilling, Curt | (dhuffman72) | Cayman Islands Red Stripes | 56 |
| 44. | Mikolas, Miles | (filler) | Queen City Quakers | 56 |
| 45. | Montas, Frankie | (dynasty8) | BooYee City Lightning | 56 |
| 46. | Schilling, Curt | Delco Old Guys | 56 | |
| 47. | Hunter, Catfish | (dhuffman72) | Cayman Islands Red Stripes | 56 |
| 48. | Kershaw, Clayton | (bostontex24) | Boston Bald Eagles | 56 |
| 49. | Higuera, Teddy | (MikeDrop0221) | Old Foresters | 56 |
| 50. | Kluber, Corey | (coachmcs) | Fairview Fighters | 56 |