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. | deGrom, Jacob | (Trulaia) | York Spartans2 | 366 |
| 2. | Bauer, Trevor | (gibblets1973) | Holyrood Purple H's | 350 |
| 3. | Cole, Gerrit | (JohnHeidy) | Greensboro Gators | 350 |
| 4. | Bauer, Trevor | (gibblets1973) | Holyrood Purple H's | 348 |
| 5. | deGrom, Jacob | (iceman18) | New York Mets | 347 |
| 6. | Bieber, Shane | (hustont) | Double Header | 347 |
| 7. | Bieber, Shane | (MLBnation) | Astoria Orange Freeze | 346 |
| 8. | Cole, Gerrit | (Sillymonkey) | Florida Thunder | 345 |
| 9. | deGrom, Jacob | (alphabravo) | Charlotte Clydesdales | 344 |
| 10. | Bauer, Trevor | (JDfrost) | Greenville All Stars | 343 |
| 11. | Scherzer, Max | (GrandSalamiTime) | Shanghai Angel_Fish | 343 |
| 12. | deGrom, Jacob | (mintwinsfan) | Indee Warriors | 341 |
| 13. | deGrom, Jacob | (befulton) | Flagstaff Gorilla Kings | 341 |
| 14. | Verlander, Justin | (Trulaia) | CC Cats | 341 |
| 15. | deGrom, Jacob | (ColinBoucher) | DoppelHead BobbleGängers | 338 |
| 16. | Cole, Gerrit | (Trulaia) | Chapecó Jacaré | 338 |
| 17. | deGrom, Jacob | (ColinBoucher) | DoppelHead BobbleGängers | 336 |
| 18. | Scherzer, Max | (Zigwiggity) | Horsehides Hornets | 335 |
| 19. | deGrom, Jacob | (mintwinsfan) | Indee Warriors | 335 |
| 20. | Cole, Gerrit | (mintwinsfan) | Fred Flinstoners | 335 |
| 21. | Strasburg, Stephen | (Egaunay) | Philadelphia Wyverns | 335 |
| 22. | Cole, Gerrit | (Wheat23) | Long Island Cobras | 335 |
| 23. | deGrom, Jacob | (joemcg) | OC Lions | 334 |
| 24. | Scherzer, Max | (SammyKJ123) | KC Royals | 334 |
| 25. | Scherzer, Max | (joemcg) | OC Gators | 333 |
| 26. | Verlander, Justin | (LDJS1947) | CHARLOTTE CLYDESDALES | 333 |
| 27. | Sale, Chris | (michelb3514) | Iowa Corn Pickers | 333 |
| 28. | Verlander, Justin | (Gradster10) | Missoula Maulers | 333 |
| 29. | Bauer, Trevor | (YS) | London Majors | 333 |
| 30. | Bieber, Shane | (Don55) | BB Biceps | 332 |
| 31. | Martinez, Pedro | (gibblets1973) | Mount Pearl Marauders | 331 |
| 32. | Bauer, Trevor | (LDJS1947) | BRENTWOOD OWLS | 331 |
| 33. | Arrieta, Jake | (ThEiRoNhOrSe04) | Portland Bounty | 331 |
| 34. | Verlander, Justin | (Negy123) | UNLV Rebels | 331 |
| 35. | deGrom, Jacob | (befulton) | Johnson Creek BlueJays | 331 |
| 36. | deGrom, Jacob | (offday) | Lansing Lugnuts | 331 |
| 37. | Verlander, Justin | (cunnythumber) | Nevada All-Nighters | 330 |
| 38. | Bauer, Trevor | (ColinBoucher) | Central Phillys HillBillies | 330 |
| 39. | Cole, Gerrit | (iamcota) | Cotaville Swamp Minnows | 330 |
| 40. | Cole, Gerrit | Fightin Amish | 330 | |
| 41. | Sale, Chris | (boogieman) | New York Mets | 330 |
| 42. | Cole, Gerrit | (Epitome31) | ST. LOIUS SUN | 329 |
| 43. | deGrom, Jacob | (Sillymonkey) | Nashville Reapers | 329 |
| 44. | Verlander, Justin | (JDfrost) | Greenville All Stars | 329 |
| 45. | Cole, Gerrit | (wocky) | Central PA Talismans | 329 |
| 46. | Bieber, Shane | (hustont) | Double Header | 328 |
| 47. | Bauer, Trevor | (bwoodcoc) | St. Clair Colts | 328 |
| 48. | Kluber, Corey | (michelb3514) | Iowa Corn Pickers | 328 |
| 49. | deGrom, Jacob | (Londonians) | Detroit Tigers | 328 |
| 50. | Cole, Gerrit | (gr33nappleboy) | Dog River River Dogs | 328 |