Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Wins)
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. | Gallegos, Giovanny | (habsco) | Tempe Monarchs | 43 |
| 2. | Petit, Yusmeiro | (habsco) | Laurel Billings Bees | 40 |
| 3. | Lugo, Seth | (habsco) | Frisco Crabs | 39 |
| 4. | Green, Chad | The Dangerous Alliance | 39 | |
| 5. | Soria, Joakim | (habsco) | Tampa Terror | 38 |
| 6. | Gallegos, Giovanny | (habsco) | Laurel Billings Bees | 37 |
| 7. | Garcia, Yimi | (AVilla) | Rockville Creek Rats | 36 |
| 8. | Hader, Josh | (Zigwiggity) | West Michigan Whitecaps | 36 |
| 9. | Pagan, Emilio | (eriko711) | PT Giants | 36 |
| 10. | Pagan, Emilio | (habsco) | Grand Forks Piggly Wigglys | 35 |
| 11. | Garcia, Yimi | (rezyboy30) | Jacksonville Pumas | 35 |
| 12. | Workman, Brandon | (BHBulldogs) | L'occitane Rhino | 34 |
| 13. | Treinen, Blake | (habsco) | Tampa Terror | 34 |
| 14. | Leclerc, Jose | (Ttj1011) | Toronto Hawks | 34 |
| 15. | Castillo, Jose | (WelshAddick) | Charlton Athletic Addicks | 33 |
| 16. | Dominguez, Seranthony | (mcvn4) | Yankeebb Kryptonite | 33 |
| 17. | Kelley, Shawn | (donnpall) | Las Vegas Sun | 32 |
| 18. | Lorenzen, Michael | (habsco) | Los Angeles Angels | 32 |
| 19. | Gallegos, Giovanny | (habsco) | Los Angeles Angels | 32 |
| 20. | Green, Chad | (Sidneypointers) | Allerton Nine | 31 |
| 21. | Martinez, Pedro | (nytkrew) | Prairie Wallflowers | 31 |
| 22. | Leclerc, Jose | (Robhawkva) | Roanoke Renegades | 31 |
| 23. | Poche, Colin | (Jrobandsteal) | San Francisco G-Men | 30 |
| 24. | Santana, Johan | (nytkrew) | Prairie Wallflowers | 30 |
| 25. | Pressly, Ryan | (habsco) | St Catharines Blues | 30 |
| 26. | Dominguez, Seranthony | (nlfan) | Halifax Schooners | 30 |
| 27. | Drysdale, Don | (ClassicOs) | Baltimore Orioles | 29 |
| 28. | Alexander, Pete | (ragingsol) | Helsinki Hot Yoga | 28 |
| 29. | Green, Chad | (Sidneypointers) | Allerton Nine | 28 |
| 30. | Walsh, Ed | (samwhitworth) | West Dakota Slime | 28 |
| 31. | Kershaw, Clayton | (fatbat1318) | NOLA Pelicans | 28 |
| 32. | Tiant, Luis | (kingstreet) | Singapore Jumbos | 28 |
| 33. | McNally, Dave | (dzach) | New Hampshire Pineapples | 28 |
| 34. | Walsh, Ed | Medical Marijuana | 28 | |
| 35. | Robertson, David | (Jrobandsteal) | San Francisco G-Men | 28 |
| 36. | Kluber, Corey | (nlfan) | Ethiopian Sea Pirates | 28 |
| 37. | Sutton, Don | (dbutts) | Brooklyn Atlantics | 28 |
| 38. | McNally, Dave | (markphip) | Branch County Frogs | 28 |
| 39. | Tiant, Luis | (bigror25) | Idaho Idahicks | 28 |
| 40. | Ryan, Nolan | (pmfletch) | MKE 70 Sailors | 28 |
| 41. | Ottavino, Adam | Geneva Golden Tornado | 28 | |
| 42. | Green, Chad | (BigRedMachine90) | Beating My Snake | 28 |
| 43. | Kershaw, Clayton | (jamin) | Chester Springs Menjai | 28 |
| 44. | Eldred, Cal | (Artinshki) | Portland Bounty | 28 |
| 45. | Chandler, Spud | (dshearer) | Kingston Beavers | 28 |
| 46. | Clemens, Roger | (Donnie23) | Deadwood Hoople Heads | 28 |
| 47. | Scherzer, Max | (Muldrows) | Indiana Cavemen | 28 |
| 48. | Green, Chad | (AJHawk) | Hampton Roads Neptunes | 28 |
| 49. | Clippard, Tyler | (Lachupacabra) | New Jersey Devils | 28 |
| 50. | Verlander, Justin | (ColinBoucher) | Hesi Pull-Up Jimbos | 28 |