Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Strikeouts)
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. | Hader, Josh | (Zigwiggity) | West Michigan Whitecaps | 373 |
| 2. | Kluber, Corey | (Mowolfon) | Bensonhurst Cyclones | 372 |
| 3. | Cole, Gerrit | (RandS) | Boston Pirates | 364 |
| 4. | Kluber, Corey | (Michaellmilles) | Shotton Axemen | 360 |
| 5. | Verlander, Justin | (Campana24) | Toronto Buds | 356 |
| 6. | Scherzer, Max | (SilverFox) | Michigan Battle Cats | 350 |
| 7. | Verlander, Justin | (yankeebb) | Strange Things | 350 |
| 8. | Scherzer, Max | (littlereb) | Texas Broncos | 350 |
| 9. | Scherzer, Max | (tallicaholic34) | Cleveland Steamers | 350 |
| 10. | Verlander, Justin | (malael) | New York Highlanders | 348 |
| 11. | Scherzer, Max | (gdavis32) | HB Ballers | 347 |
| 12. | deGrom, Jacob | (ColinBoucher) | Sycamore Street MollyWhoppers | 347 |
| 13. | Scherzer, Max | (gibblets1973) | Los Gibbletos 11leven | 347 |
| 14. | Corbin, Patrick | (me) | Bartonsville Pumas | 347 |
| 15. | deGrom, Jacob | (mikeb9991) | Indianapolis Crusaders | 347 |
| 16. | Scherzer, Max | (mickey7) | New York Hammers | 347 |
| 17. | Kluber, Corey | (mattholland1975) | Durango Drunk Cowboys | 346 |
| 18. | Verlander, Justin | (iceman18) | New York Mets | 346 |
| 19. | Scherzer, Max | (dark) | Jersey City Badlands | 346 |
| 20. | Scherzer, Max | (ETMusic) | Oakland Athletics | 346 |
| 21. | Sale, Chris | (Bigredmachine90) | Barboursville Bacon | 345 |
| 22. | Sale, Chris | (Raidergreg72) | Saint Charles RiverCats | 345 |
| 23. | Verlander, Justin | (DodgerRon49) | Los Angeles Rhinos | 343 |
| 24. | Scherzer, Max | (hamburglar) | Aro's Laugh | 343 |
| 25. | Scherzer, Max | (disneyboy9) | Towson Generals | 343 |
| 26. | Kluber, Corey | (BigRedMachine90) | Huntington BANDITS | 343 |
| 27. | Kluber, Corey | (Michaellmilles) | Shotton Axemen | 343 |
| 28. | Sale, Chris | (SevanElevan) | Quincy X-Cords | 342 |
| 29. | Sale, Chris | (Bluesig) | Buñawan Bald Eagles | 342 |
| 30. | Scherzer, Max | (Consigliere33) | Chicago Cubs | 342 |
| 31. | Kershaw, Clayton | (Trulaia) | Scranton Ducks | 342 |
| 32. | deGrom, Jacob | (htennis) | What If I Never Get Over You | 341 |
| 33. | Scherzer, Max | (iceman18) | New York Mets | 341 |
| 34. | Cole, Gerrit | (warningtrackmac) | Los Angeles Greats | 340 |
| 35. | Sale, Chris | (YakAttackers) | Alabama Angry Birds | 340 |
| 36. | Kluber, Corey | Bow Tie Village Ball Talk | 340 | |
| 37. | Kluber, Corey | (Mowolfon) | Bensonhurst Cyclones | 340 |
| 38. | Scherzer, Max | (jim2miller) | Northern Ohio Nighthawks | 339 |
| 39. | Scherzer, Max | (Raidergreg72) | Saint Charles RiverCats | 339 |
| 40. | Scherzer, Max | Balllcity Blue Jays | 339 | |
| 41. | Kluber, Corey | (jhaynes118) | Make America Great Again | 338 |
| 42. | Cole, Gerrit | (htennis) | The 100 Bellarkes | 338 |
| 43. | Scherzer, Max | (hayzess) | Bowie Blue Birds | 338 |
| 44. | Scherzer, Max | (Erwin23) | Indiana Cavemen | 338 |
| 45. | Sale, Chris | (longhorn0348) | Georgetown Gorilla Kings | 337 |
| 46. | Scherzer, Max | (jrobandsteal) | Iowa Corn Pickers | 337 |
| 47. | Scherzer, Max | (jrobandsteal) | Iowa Corn Pickers | 337 |
| 48. | Sale, Chris | (mattholland1975) | Portland Punishers | 337 |
| 49. | Verlander, Justin | (tylergreen) | St. Peter Saints | 336 |
| 50. | Kershaw, Clayton | (Majestic44) | Denver Fox | 336 |