Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (SO/9)
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. | Diaz, Edwin | (ColinBoucher) | JiggaBooing LoafPinchers | 15.4 |
| 2. | Parker, Blake | (mattholland1975) | Holyhead Killer Hornets | 15.4 |
| 3. | May, Trevor | Binghampton Bulls | 15.4 | |
| 4. | James, Josh | Boomtown Clarks | 15.3 | |
| 5. | Chapman, Aroldis | (Majestic44) | Durango Pirates | 15.3 |
| 6. | Giles, Ken | (ssrice123) | Kiev Dynamo | 15.1 |
| 7. | Boyd, Matt | (filler2) | Houston Mavericks | 15.2 |
| 8. | Williams, Devin | (filler8) | Lexington Sign Stealers | 15.1 |
| 9. | Diaz, Edwin | (Gradster10) | Portland Patriots | 15.3 |
| 10. | Chapman, Aroldis | (tda81) | Louisville Sluggers | 15.0 |
| 11. | Barnes, Matt | (Offday) | Newfield Jiaolong | 15.0 |
| 12. | Rosenthal, Trevor | (mrice13) | Carlisle Thundering Herd | 15.2 |
| 13. | Hader, Josh | (doittoitlars) | Kentucky HeadHunters | 15.0 |
| 14. | Williams, Devin | (Majestic44) | Louisville Predators | 15.0 |
| 15. | James, Josh | (Benrosenberg) | Biloxi Blue Bombers | 15.2 |
| 16. | Diaz, Edwin | (edawg) | Cherry Point Bombers | 15.0 |
| 17. | Chapman, Aroldis | (tactracer) | Rainier Beeeerrrr | 14.8 |
| 18. | Leclerc, Jose | (Brooker) | Los Angeles Nuts | 15.1 |
| 19. | Peralta, Freddy | (michelb3514) | Iowa Corn Pickers | 14.9 |
| 20. | Trivino, Lou | (dynasty8) | Barboursville Bacon | 14.8 |
| 21. | Anderson, Nick | (Gradster10) | SAN DIEGO HEAT | 14.8 |
| 22. | Kimbrel, Craig | (alstro11) | 77 Smelly Sox | 14.9 |
| 23. | Williams, Devin | (Bluesig) | Buruañga Mersenaryos | 14.7 |
| 24. | Diaz, Edwin | (mattholland1975) | Bow Mar Badgers | 14.7 |
| 25. | May, Trevor | Valenwood Bosmers | 14.9 | |
| 26. | Garrett, Amir | Valenwood Bosmers | 14.8 | |
| 27. | Diaz, Edwin | (tda81) | Oakmont Speagles | 14.7 |
| 28. | Parker, Blake | (Bevofan2020) | Milwaukee Brewers | 14.8 |
| 29. | Wittgren, Nick | (Majestic44) | Santa cruz Sharks | 14.8 |
| 30. | Anderson, Nick | (tsnets) | Boro Jokers | 14.6 |
| 31. | Holland, Greg | (Gaberino) | Portland Punishers | 14.6 |
| 32. | Williams, Devin | (dynasty) | Rancho Cucamonga Quakes | 14.6 |
| 33. | Diaz, Edwin | (Gradster10) | Uncle Dave’s Ding Dongs | 14.5 |
| 34. | Barnes, Matt | Dallas Cyclones | 14.5 | |
| 35. | Diaz, Edwin | (gpsman) | Victoria Knights | 14.5 |
| 36. | Hader, Josh | (dynasty) | Hawaii Volcanos | 14.8 |
| 37. | Barnes, Matt | (Ethan) | Home Aloners | 14.5 |
| 38. | Hader, Josh | (Lostit) | Chicago Lost Cubs | 14.6 |
| 39. | Anderson, Nick | (Lostit) | Chicago Lost Cubs | 14.5 |
| 40. | Chapman, Aroldis | (filler8) | Clubber Langs | 14.5 |
| 41. | Anderson, Nick | (jackfactor) | Costa Cay Condors | 14.6 |
| 42. | Hader, Josh | (griffeyga) | The 100 Bellarkes | 14.5 |
| 43. | Diaz, Edwin | (dynasty) | PITTSBURGH GOLDEN BEARS | 14.5 |
| 44. | Diaz, Edwin | (Iceman18) | New York Mets | 14.4 |
| 45. | Knebel, Corey | (Hammahead) | McKee’s Rocks Green Snakes | 14.3 |
| 46. | Capps, Carter | (dynasty) | Orlando Hogs | 14.4 |
| 47. | Kimbrel, Craig | (doittoitlars) | Oakmont Indica | 14.4 |
| 48. | Chapman, Aroldis | Brooklyn Wolves | 14.3 | |
| 49. | Strop, Pedro | (filler8) | New York Mets | 14.6 |
| 50. | Kimbrel, Craig | (AKVG332) | Lancaster Cylos | 14.3 |