Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Pitcher 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) | Pittsburgh Parrots | 352 |
| 2. | deGrom, Jacob | (bwcw40) | New York Spirit | 351 |
| 3. | deGrom, Jacob | (Trulaia) | Pittsburgh Parrots | 347 |
| 4. | Cole, Gerrit | (filler) | Desert City High Heat | 344 |
| 5. | deGrom, Jacob | Maryland Crabs | 343 | |
| 6. | deGrom, Jacob | (hanson) | Bmore Steamed Crabs | 341 |
| 7. | deGrom, Jacob | Flagstaff Gorilla Kings | 340 | |
| 8. | deGrom, Jacob | (ArcticWolf30) | Los Angeles Blue Halos | 338 |
| 9. | deGrom, Jacob | (befulton) | Johnson Creek BlueJays | 338 |
| 10. | Kluber, Corey | (ThatUsedcar) | Bristol Thunder | 336 |
| 11. | deGrom, Jacob | (aimcell) | Detroit Dumpsters 2 | 336 |
| 12. | deGrom, Jacob | Hollywood Warriors | 335 | |
| 13. | deGrom, Jacob | (Jeoiv78) | Portland Beavers | 334 |
| 14. | deGrom, Jacob | (joemcg) | OC Lions | 334 |
| 15. | Cole, Gerrit | (angelsfan27) | Baah Haabah King Crabs | 333 |
| 16. | deGrom, Jacob | (befulton) | Johnson Creek BlueJays | 332 |
| 17. | deGrom, Jacob | Boston Bees | 331 | |
| 18. | deGrom, Jacob | Park City Hawks | 331 | |
| 19. | deGrom, Jacob | (Trulaia) | Pittsburgh Parrots | 331 |
| 20. | deGrom, Jacob | Park City Hawks | 331 | |
| 21. | deGrom, Jacob | (Ask12be1) | Hampton Roads Beach Bums | 329 |
| 22. | deGrom, Jacob | Logans Run | 329 | |
| 23. | Wheeler, Zack | Dough Nuts | 328 | |
| 24. | deGrom, Jacob | (zrausch1) | JERSEY VETS | 328 |
| 25. | deGrom, Jacob | (GLOBEXcorp) | GLOBEX Corporation | 328 |
| 26. | Sale, Chris | Washington Patriots | 327 | |
| 27. | Scherzer, Max | (Trulaia) | Norfolk Tides Float All Boats | 327 |
| 28. | Glasnow, Tyler | (filler) | Vancouver Canadians | 327 |
| 29. | deGrom, Jacob | Flagstaff Gorilla Kings | 326 | |
| 30. | deGrom, Jacob | (zrausch1) | Cooba Bluebirds | 325 |
| 31. | Martinez, Pedro | (babyave1) | Heinie Cannonballs | 324 |
| 32. | deGrom, Jacob | (KOOGS) | San Antonio Longhorns | 324 |
| 33. | deGrom, Jacob | (Slippingjimmy) | Chittenango Diamonds | 323 |
| 34. | deGrom, Jacob | (befulton) | ATLANTA DOGS | 323 |
| 35. | Martinez, Pedro | (babyave1) | Boston BigHats | 323 |
| 36. | deGrom, Jacob | (zrausch1) | Cooba Bluebirds | 323 |
| 37. | Scherzer, Max | (filler) | Punxsutawney Polecats | 323 |
| 38. | Martinez, Pedro | (Iamcota) | New Hampshire Nuked Hotdogs | 323 |
| 39. | deGrom, Jacob | (ColinBoucher) | Dunning Kruger Dotards | 322 |
| 40. | deGrom, Jacob | (Trulaia) | Pittsburgh Parrots | 322 |
| 41. | deGrom, Jacob | (zrausch1) | Miami Marlins | 322 |
| 42. | Johnson, Randy | (GodGood) | Memphis Red Sox | 321 |
| 43. | Sale, Chris | (jeter0296) | Freehold Lancers | 321 |
| 44. | Cole, Gerrit | (CardsSs) | Bartonsville Pumas | 321 |
| 45. | deGrom, Jacob | (skieff) | Hustons Mill YardHawks | 320 |
| 46. | Kluber, Corey | (ThatUsedcar) | Bristol Thunder | 320 |
| 47. | deGrom, Jacob | Seattle Sluggers | 320 | |
| 48. | deGrom, Jacob | (bwcw40) | Moscow MoMos | 320 |
| 49. | deGrom, Jacob | (finalbody) | La Grunta Victims | 319 |
| 50. | Kershaw, Clayton | (gibblets1973) | Grand Wazoo | 319 |
