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 | (Zigwiggity) | Boston Pirates | 364 |
| 4. | Kluber, Corey | (hoopdirt) | Shotton Axemen | 360 |
| 5. | Verlander, Justin | (Arachnids) | Miami Arachnids | 356 |
| 6. | Scherzer, Max | (littlereb) | Texas Broncos | 350 |
| 7. | Scherzer, Max | (gamebreaker) | Cleveland Steamers | 350 |
| 8. | Scherzer, Max | (Prendi) | Vegas Gangstas | 350 |
| 9. | Verlander, Justin | (yankeebb) | Strange Things | 350 |
| 10. | Verlander, Justin | (malael) | New York Highlanders | 348 |
| 11. | deGrom, Jacob | (sardine) | Bisbee-Douglas Copper Kings | 347 |
| 12. | deGrom, Jacob | (ColinBoucher) | Sycamore Street MollyWhoppers | 347 |
| 13. | Corbin, Patrick | (superswatcop) | Minnesota Twins | 347 |
| 14. | Scherzer, Max | (gibblets1973) | Los Gibbletos 11leven | 347 |
| 15. | Scherzer, Max | (4sibsc) | HB Ballers | 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 | (JP311) | Norwich Tornadoes | 346 |
| 20. | Scherzer, Max | (Zellie) | Oakland Athletics | 346 |
| 21. | Sale, Chris | (Bigredmachine90) | Barboursville Bacon | 345 |
| 22. | Sale, Chris | (steveh28) | Saint Charles RiverCats | 345 |
| 23. | Kluber, Corey | (hoopdirt) | Shotton Axemen | 343 |
| 24. | Kluber, Corey | (dasmashtros) | Huntington BANDITS | 343 |
| 25. | Scherzer, Max | (Muskybonz) | Milwaukee Bombers | 343 |
| 26. | Scherzer, Max | (krallel) | Towson Generals | 343 |
| 27. | Verlander, Justin | (iceman18) | Los Angeles Rhinos | 343 |
| 28. | Sale, Chris | (Haloman) | Uranus Rebel Yells | 342 |
| 29. | Sale, Chris | (Bluesig) | Buñawan Bald Eagles | 342 |
| 30. | Scherzer, Max | (Consigliere33) | Chicago Cubs | 342 |
| 31. | Kershaw, Clayton | (Trulaia) | Scranton Ducks | 342 |
| 32. | Scherzer, Max | (iceman18) | New York Mets | 341 |
| 33. | deGrom, Jacob | (htennis) | What If I Never Get Over You | 341 |
| 34. | Sale, Chris | (mudduck15) | Alabama Angry Birds | 340 |
| 35. | Kluber, Corey | (mimadiga) | Virginia Athletics | 340 |
| 36. | Cole, Gerrit | (gdavis32) | Los Angeles Greats | 340 |
| 37. | Kluber, Corey | (Mowolfon) | Bensonhurst Cyclones | 340 |
| 38. | Scherzer, Max | (KevDawg) | Saint Charles RiverCats | 339 |
| 39. | Scherzer, Max | (jasonhartnett) | Nard Dogs | 339 |
| 40. | Scherzer, Max | (jim2miller) | Northern Ohio Nighthawks | 339 |
| 41. | Kluber, Corey | (hennigardan) | Trump Sucks Forever | 338 |
| 42. | Cole, Gerrit | (htennis) | The 100 Bellarkes | 338 |
| 43. | Scherzer, Max | (Muldrows) | Indiana Cavemen | 338 |
| 44. | Scherzer, Max | (tballgame9) | Kennebec Valley Jammers | 338 |
| 45. | Cole, Gerrit | (BigRedMachine90) | Huntington Panty Droppers | 337 |
| 46. | Sale, Chris | (Akylos) | Flagstaff Gorilla Kings | 337 |
| 47. | Scherzer, Max | (BC2000) | Dartmouth BaseDogs | 337 |
| 48. | Sale, Chris | (mattholland1975) | Portland Punishers | 337 |
| 49. | Scherzer, Max | (BC2000) | Dartmouth BaseDogs | 337 |
| 50. | Kluber, Corey | (ColinBoucher) | Derelict Winos | 336 |