Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Quality Starts)
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. | deGrom, Jacob | (Saints69) | Have You Ever Seen THE RAIN 2 | 32 |
| 2. | Scherzer, Max | (Trulaia) | Tampa Bay Deez Nutz | 32 |
| 3. | DeLeon, Jose | (ILO-STL) | STL Silencers '80s | 32 |
| 4. | Greinke, Zack | (watcher99) | Burlington Rhino | 32 |
| 5. | deGrom, Jacob | (filler) | Atlantic City HITMAN | 32 |
| 6. | Brown, Mordecai | (filler) | Louisville Colonel’s Klink | 32 |
| 7. | Koufax, Sandy | (nycubsfan) | Chicago Cubs | 32 |
| 8. | deGrom, Jacob | (richgibson) | Eidelweis PIRATES | 31 |
| 9. | deGrom, Jacob | (hayzess) | Gilchrist Yellow Jackets | 31 |
| 10. | deGrom, Jacob | (gibblets1973) | Brooklyn Bulldogs | 31 |
| 11. | Guidry, Ron | (wduncan) | Panama City Sardines | 31 |
| 12. | Richard, J.R. | (rreebe916) | Toronto Guardians | 31 |
| 13. | deGrom, Jacob | (richgibson) | Lonely BLUEBOYS | 31 |
| 14. | deGrom, Jacob | (ironwill1) | DC Grays | 31 |
| 15. | deGrom, Jacob | (Batista) | Boston Pointy Butts | 31 |
| 16. | deGrom, Jacob | (liddlefeat) | Cleveland Eries | 31 |
| 17. | Clemens, Roger | (jeter0296) | Freehold Yankees | 31 |
| 18. | Fernandez, Jose | (filler8) | Sudbury Bulldogs | 31 |
| 19. | deGrom, Jacob | (Mortamar1966) | Ridge Harbor Lead Bellies | 31 |
| 20. | Richard, J.R. | (rreebe916) | Toronto Guardians | 31 |
| 21. | Sugiuchi, Toshiya | (gibblets1973) | Bally Haly Bay Stars | 31 |
| 22. | deGrom, Jacob | (richgibson) | Raj CounterSPIES | 31 |
| 23. | Fujimoto, Hideo | Shochiku Robins | 31 | |
| 24. | deGrom, Jacob | (Ikej) | New England Bombs | 31 |
| 25. | deGrom, Jacob | (jamin) | Chester Springs Menjai | 31 |
| 26. | deGrom, Jacob | (rreebe916) | Base Ball Homers | 31 |
| 27. | Maddux, Greg | (chaaad) | New York Magnolia BC | 31 |
| 28. | deGrom, Jacob | (richgibson) | Highlander Folk CTr ORGanIZERS | 31 |
| 29. | deGrom, Jacob | (richgibson) | Raj CounterSPIES | 31 |
| 30. | Scherzer, Max | (wduncan) | New York Bombas | 31 |
| 31. | Johnson, Walter | (filler8) | LITTLE ROCK OUTLAWS | 31 |
| 32. | Johnson, Walter | (Saints69) | Have You Ever Seen THE RAIN 2 | 31 |
| 33. | deGrom, Jacob | (DaveH) | Ladson Cougars | 31 |
| 34. | Ryan, Nolan | (GlansGruber) | Springfield Isotopes | 30 |
| 35. | Tiant, Luis | (filler) | Vernon Tigers | 30 |
| 36. | deGrom, Jacob | (filler) | Long Island Defenders | 30 |
| 37. | Yoshimi, Kazuki | (Vince853) | Naha Sensos | 30 |
| 38. | deGrom, Jacob | (chaaad) | Cuban X-Giants | 30 |
| 39. | deGrom, Jacob | (stonemob) | Pittsburgh Patriots | 30 |
| 40. | Scherzer, Max | (dcwabdi) | Twin Cities Americans | 30 |
| 41. | deGrom, Jacob | (infmusxp) | Mudville NINE | 30 |
| 42. | Richard, J.R. | (jaredhamann) | Grunts N Bunts | 30 |
| 43. | Johnson, Randy | (FJS) | Tatoonie Sarlaccs | 30 |
| 44. | Koufax, Sandy | (filler8) | LITTLE ROCK OUTLAWS | 30 |
| 45. | Kershaw, Clayton | (richgibson) | MK ULTRAS | 30 |
| 46. | Burnes, Corbin | (gpsman) | Detroit Tigers | 30 |
| 47. | Richard, J.R. | (WorcWarr) | Worcester Warriors | 30 |
| 48. | deGrom, Jacob | (WorcWarr) | Worcester Warriors | 30 |
| 49. | Richard, J.R. | (bdavids28) | Greasy Jungle | 30 |
| 50. | Ryan, Nolan | (POPSDRYWALL) | Durango Dragons | 30 |
