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. | Koufax, Sandy | (nycubsfan) | Chicago Cubs | 0 |
| 2. | deGrom, Jacob | (filler8) | Louisiana BLUETOOTH | 0 |
| 3. | DeLeon, Jose | (TranquilChaos18) | Kitchener Kodiaks | 0 |
| 4. | Scherzer, Max | (TMNT740) | Tampa Bay Tigers | 0 |
| 5. | deGrom, Jacob | (Mortamar1966) | Ridge Harbor Lead Bellies | 0 |
| 6. | deGrom, Jacob | (Ikej) | New England Bombs | 0 |
| 7. | deGrom, Jacob | (paranoid) | Las Vegas Scorpions | 0 |
| 8. | Scherzer, Max | (dynasty8) | New York Metro | 0 |
| 9. | Fernandez, Jose | (jeter0296) | Freehold Yankees | 0 |
| 10. | deGrom, Jacob | (MikeDrop0221) | Base Ball Homers | 0 |
| 11. | Sugiuchi, Toshiya | (gibblets1973) | Bally Haly Bay Stars | 0 |
| 12. | deGrom, Jacob | (paranoid) | Las Vegas Scorpions | 0 |
| 13. | deGrom, Jacob | (rreebe916) | Boston Bees | 0 |
| 14. | Maddux, Greg | (chaaad) | New York Magnolia BC | 0 |
| 15. | Fujimoto, Hideo | (DaveH) | Shochiku Robins | 0 |
| 16. | Richard, J.R. | (rreebe916) | Toronto Guardians | 0 |
| 17. | deGrom, Jacob | (MikeDrop0221) | Base Ball Classics | 0 |
| 18. | Johnson, Walter | (filler) | LITTLE ROCK OUTLAWS | 0 |
| 19. | deGrom, Jacob | (MikeDrop0221) | Highlander Folk CTr ORGanIZERS | 0 |
| 20. | deGrom, Jacob | (hayzess) | Gilchrist Yellow Jackets | 0 |
| 21. | deGrom, Jacob | (paranoid) | Las Vegas Lasers | 0 |
| 22. | deGrom, Jacob | (Tjm) | Oakland Black Wasps | 0 |
| 23. | deGrom, Jacob | (gibblets1973) | Brooklyn Bulldogs | 0 |
| 24. | Guidry, Ron | (wduncan) | Panama City Sardines | 0 |
| 25. | Richard, J.R. | (rreebe916) | Toronto Guardians | 0 |
| 26. | deGrom, Jacob | (jamin) | Chester Springs Menjai | 0 |
| 27. | Cole, Gerrit | (Amf) | Baah Haabah King Crabs | 0 |
| 28. | Yoshimi, Kazuki | (cjames17) | Naha Sensos | 0 |
| 29. | Bender, Chief | (rawlscl78) | Geriatric Generics | 0 |
| 30. | Richard, J.R. | (rreebe916) | Harrisburg Hornets | 0 |
| 31. | deGrom, Jacob | (rreebe916) | Raleigh Bulldogs | 0 |
| 32. | Koufax, Sandy | (stonemob) | Pittsburgh Explorers | 0 |
| 33. | deGrom, Jacob | (JDFrost) | Greenville All Stars | 0 |
| 34. | Arrieta, Jake | (tgbsbl1967) | Tampa Sharks | 0 |
| 35. | deGrom, Jacob | (chaaad) | Weeksville Unknown | 0 |
| 36. | Richard, J.R. | (dynasty) | Madison Devils | 0 |
| 37. | Leonard, Dutch | (mattholland1975) | Chicago Bears | 0 |
| 38. | deGrom, Jacob | (Wileydog97) | Raleigh Lounge Lizards | 0 |
| 39. | Maddux, Greg | (Zeedood) | Pinochet Pilots | 0 |
| 40. | deGrom, Jacob | (teamkev24) | Greasy Lakes | 0 |
| 41. | deGrom, Jacob | (bwcw40) | Pabst Blue Ribbons | 0 |
| 42. | deGrom, Jacob | (Trulaia) | Pittsburgh Parrots | 0 |
| 43. | Sutton, Don | (jpcortez) | Bakersfield Replacements | 0 |
| 44. | Richard, J.R. | (filler) | Halawa Rangers | 0 |
| 45. | Richard, J.R. | (plpl512) | Montreal Mad Dogs | 0 |
| 46. | Richard, J.R. | (ThEiRoNhOrSe04) | Hoboken Zephyrs | 0 |
| 47. | Arrieta, Jake | (Tgbsbl1967) | New Market Mallers | 0 |
| 48. | deGrom, Jacob | (LDJS1947) | ST. LOUIS SUN | 0 |
| 49. | deGrom, Jacob | (Theguth) | Ebby Calvin Nuke Lalooshes | 0 |
| 50. | Leonard, Dennis | (chunkyschumps) | LOUISVILLE BATS | 0 |
