Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Innings)
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. | Ford, Russ | (MLBNation) | Gas City Green Sox | 347.2 |
| 2. | Walsh, Ed | (MLBNation) | Gas City Green Sox | 336.2 |
| 3. | Baldwin, Lady | (MLBNation) | Gas City Green Sox | 335.1 |
| 4. | Morris, Ed | (MLBNation) | Gas City Green Sox | 318.2 |
| 5. | Baldwin, Lady | (MLBNation) | Gas City Green Sox | 313.2 |
| 6. | Seward, Ed | (MLBNation) | Gas City Green Sox | 310.1 |
| 7. | Gibson, Bob | (dynasty) | Pacific Surf | 305.0 |
| 8. | Marichal, Juan | (gate-mouth) | Baltimore 💰⚾ | 304.2 |
| 9. | Corcoran, Larry | (dmanofgod1) | East Coast Clubbers | 304.1 |
| 10. | Johnson, Walter | (Bears19) | Beaverton Barnacles | 304.0 |
| 11. | Keefe, Tim | (MLBNation) | Gas City Green Sox | 303.1 |
| 12. | Sutton, Don | (kingstreet) | Singapore Express | 303.1 |
| 13. | Tanana, Frank | (ac31) | Gibsonia Gators | 303.1 |
| 14. | Marichal, Juan | (pittcontact) | MASSAPEQUA CHIEFS | 303.1 |
| 15. | Kershaw, Clayton | (Trulaia) | city players | 303.0 |
| 16. | Marichal, Juan | (Doceagle) | Blauvelt Beetles | 302.2 |
| 17. | Buffinton, Charlie | (Winzy23) | Saskatoon Blue Bombers | 302.1 |
| 18. | Kershaw, Clayton | (Trulaia) | Blythe Broncos | 302.0 |
| 19. | Vance, Dazzy | (mickey7) | Pottawatomie JohnBrown'sBoys | 302.0 |
| 20. | Schilling, Curt | (Trulaia) | Atenveldt Blackfire | 302.0 |
| 21. | Hecker, Guy | (filler) | Guantanamo Indios | 301.2 |
| 22. | Drysdale, Don | (ClassicOs) | Baltimore Orioles | 301.1 |
| 23. | Saberhagen, Bret | (montgomerybrews) | Montgomery Brewsters | 300.2 |
| 24. | Drysdale, Don | (ClassicOs) | Baltimore Orioles | 300.2 |
| 25. | Johnson, Walter | Gotham Batmen | 300.1 | |
| 26. | King, Silver | (dmanofgod1) | East Coast Clubbers | 300.1 |
| 27. | Tiant, Luis | (bigjoe52) | Brooklyn Superbas | 300.1 |
| 28. | Scott, Mike | (RockLaubster) | Edgerton Eagles | 300.1 |
| 29. | Perry, Gaylord | (kingstreet) | Singapore Slingers | 299.2 |
| 30. | Radbourn, Charley | (MLBNation) | Gas City Green Sox | 299.2 |
| 31. | Gooden, Dwight | (jpcortez) | Bakersfield Replacements | 299.2 |
| 32. | Clemens, Roger | (Bj99) | Deadwood Hoople Heads | 299.1 |
| 33. | Johnson, Walter | (MLBNation) | Gas City Green Sox | 299.1 |
| 34. | Maloney, Jim | (griz1962) | Peñarrubia Sox | 299.0 |
| 35. | McLain, Denny | (MILLERHUGGINS) | Mpls Millers | 299.0 |
| 36. | Overall, Orval | (MLBNation) | Gas City Green Sox | 299.0 |
| 37. | Sweeney, Charlie | (Shpennymons) | Puzley Croswerdes | 298.2 |
| 38. | Sutton, Don | (kingstreet) | Singapore Slingers | 298.2 |
| 39. | Soto, Mario | (filler) | Verbal Terrorist | 298.2 |
| 40. | Blue, Vida | (Trulaia) | Brimfield Buccos | 298.1 |
| 41. | Arrieta, Jake | (Tswieton) | Iowa Corn Pickers | 298.1 |
| 42. | Ford, Russ | (michelb3514) | Iowa Corn Pickers | 298.1 |
| 43. | Walsh, Ed | (samwhitworth) | San Francisco Walkers | 298.1 |
| 44. | Walsh, Ed | (kingstreet) | Singapore Slingers | 298.0 |
| 45. | Perry, Gaylord | (kingstreet) | Singapore Slingers | 298.0 |
| 46. | Marichal, Juan | (Silas) | Hurley Bagmen | 298.0 |
| 47. | Sutton, Don | (Montanajack) | Montana Silver Eagles | 298.0 |
| 48. | Radbourn, Charley | Baracoa Cienfuegos | 298.0 | |
| 49. | Radbourn, Charley | (GT049) | Indianapolis Hoosiers | 298.0 |
| 50. | Ford, Russ | 12th Man Over Achievers | 298.0 |