Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Average)
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. | Hamilton, Billy | (andyyoung) | Lancaster Jethawks | .409 |
| 2. | Duffy, Hugh | (gibblets1973) | Corner Brook Cleaning | .399 |
| 3. | Meyerle, Levi | Phoenix Dragons | .399 | |
| 4. | Sisler, George | (Crackpot) | Yachats Drag Queens | .398 |
| 5. | Jennings, Hughie | (Shpennymons) | New York Highlanders | .397 |
| 6. | Hamilton, Billy | (Jimfas80) | High Desert Gunslingers | .396 |
| 7. | Keeler, Willie | Alaska Red Bears | .396 | |
| 8. | Bonds, Barry | (BAR23) | Dallas Mustangs | .396 |
| 9. | Jackson, Joe | Alaska Red Bears | .395 | |
| 10. | Cobb, Ty | (fungoking) | Brooklyn Tip Tops | .394 |
| 11. | Cobb, Ty | (boetto) | Fitz and Fools Elderlings | .392 |
| 12. | Goslin, Goose | (hamburglar) | I Maul Children | .392 |
| 13. | Cobb, Ty | (DaveH) | Brooklyn Robins | .392 |
| 14. | Cobb, Ty | (dynasty) | Montana Ducks | .392 |
| 15. | Hamilton, Billy | (DaveH) | Ladson Dodgers | .391 |
| 16. | Sisler, George | (hamburglar) | I Maul Children | .391 |
| 17. | Hamilton, Billy | (noleary) | Louisville Colonels | .391 |
| 18. | Duffy, Hugh | (Shpennymons) | Oyster Bay Eagles | .390 |
| 19. | Cobb, Ty | (Shpennymons) | Badoomcha Bandits | .390 |
| 20. | Tucker, Tommy | (fungoking) | Tulsa Drillers | .389 |
| 21. | Jennings, Hughie | (Shpennymons) | Chesapeake Oysters | .388 |
| 22. | Jackson, Joe | (Shpennymons) | Transylvania Tigers | .388 |
| 23. | Meyerle, Levi | (Lostit) | Las Vegas Lost Orphans | .387 |
| 24. | Browning, Pete | (fungoking) | Brooklyn Tip Tops | .387 |
| 25. | Clements, Jack | (boness) | HMB Dead Moons | .387 |
| 26. | Cobb, Ty | (andyyoung) | Syracuse Predators | .387 |
| 27. | Williams, Ted | Sacramento Lions | .387 | |
| 28. | Cobb, Ty | (skooler1) | Scranton Spartans | .387 |
| 29. | Hornsby, Rogers | (gibblets1973) | Long Beach NL Lawmen | .387 |
| 30. | Meyerle, Levi | (filler) | Minnesota Frogs | .387 |
| 31. | Cobb, Ty | (fungoking) | New York Knights | .385 |
| 32. | Browning, Pete | (fungoking) | South Hampton Pioneers | .385 |
| 33. | Thompson, Sam | (boetto) | Clerres White Prophets | .385 |
| 34. | Jackson, Joe | (dynasty) | Milwaukee Skeletons | .383 |
| 35. | Hamilton, Billy | (fungoking) | New York Highlanders | .383 |
| 36. | Duffy, Hugh | (fungoking) | PHILADELPHIA STATESMEN | .383 |
| 37. | Vaughan, Arky | (rcduke) | Mostly Southpaws | .383 |
| 38. | McGraw, John | Texas Outlaws | .383 | |
| 39. | Cobb, Ty | (Saints69) | Nevada Snakes | .383 |
| 40. | Cobb, Ty | (boness) | HMB Dead Moons | .383 |
| 41. | Meyerle, Levi | (filler8) | Portland Vikings | .383 |
| 42. | Speaker, Tris | (michelb3514) | Iowa Corn Pickers | .383 |
| 43. | Sisler, George | (filler8) | Salem Demons | .383 |
| 44. | Cobb, Ty | (mattholland1975) | Salida Sheriffs | .383 |
| 45. | Clarke, Fred | (dynasty) | Utah Nightmares | .382 |
| 46. | Jennings, Hughie | (ChasBo) | NOLA Irish | .382 |
| 47. | Jackson, Joe | (tbandit1) | Bronx Bulldogs | .382 |
| 48. | Musial, Stan | (hayzess) | Yahats Serpents | .382 |
| 49. | Cobb, Ty | (RichGibson) | Fort Bragg Cartel SEALS | .382 |
| 50. | Ruth, Babe | (hankey23) | Highland Park Highlanders | .381 |
