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. | Parker, Blake | (mattholland1975) | Holyhead Killer Hornets | 15.4 |
| 2. | James, Josh | (filler) | Dulac Mud Doggs | 15.3 |
| 3. | Giles, Ken | (ssrice123) | Kiev Dynamo | 15.1 |
| 4. | Boyd, Matt | (Cg4177) | Houston Mavericks | 15.2 |
| 5. | Kimbrel, Craig | (Erwin23) | Anaheim Angels | 15.2 |
| 6. | Barnes, Matt | Seattle Scooters | 15.2 | |
| 7. | Diaz, Edwin | Freehold Yankees | 15.3 | |
| 8. | Barnes, Matt | (Offday) | Newfield Jiaolong | 15.0 |
| 9. | Neris, Hector | (hamburglar) | Werewolf Bar Mitzvahs | 14.9 |
| 10. | Hader, Josh | (Silvereaglemyst) | Kentucky HeadHunters | 15.0 |
| 11. | James, Josh | Biloxi Blue Bombers | 15.2 | |
| 12. | Diaz, Edwin | (madmike76) | Super Stars | 15.0 |
| 13. | Chapman, Aroldis | (tactracer) | Rainier Beeeerrrr | 14.8 |
| 14. | Leclerc, Jose | (bishop427) | Modesto Nuts | 15.1 |
| 15. | Trivino, Lou | (Bigredmachine90) | Barboursville Bacon | 14.8 |
| 16. | Betances, Dellin | (babyave1) | House C Hurricanes | 14.9 |
| 17. | Diaz, Edwin | (mattholland1975) | Bow Mar Badgers | 14.7 |
| 18. | Giles, Ken | Boston Sox | 14.8 | |
| 19. | Garrett, Amir | Valenwood Bosmers | 14.8 | |
| 20. | Diaz, Edwin | (alstro11) | St. Mary’s Isle Slingers | 14.7 |
| 21. | Wittgren, Nick | (mattholland1975) | Sarasota Sharks | 14.8 |
| 22. | Anderson, Nick | (tsnets) | Boro Jokers | 14.6 |
| 23. | Holland, Greg | Rancho ⚾ld Timers | 14.6 | |
| 24. | Williams, Devin | (Zigwiggity) | Rancho Cucamonga Quakes | 14.6 |
| 25. | Anderson, Nick | (BigRedMachine90) | Huntington Panty Droppers | 14.6 |
| 26. | Hader, Josh | (jcbsavages) | jack eats ducks | 14.6 |
| 27. | Lidge, Brad | (timyoung) | Kansas City Monarchs | 14.8 |
| 28. | Barnes, Matt | Dallas Cyclones | 14.5 | |
| 29. | Hader, Josh | (tgbsbl1967) | Hawaii Volcanos | 14.8 |
| 30. | Barnes, Matt | (dzach) | Home Aloners | 14.5 |
| 31. | Fry, Jace | (vernster52) | Gelnhausen Warthogs | 14.6 |
| 32. | Hader, Josh | (Lostit) | Chicago Lost Cubs | 14.6 |
| 33. | Chapman, Aroldis | (filler) | Clubber Langs | 14.5 |
| 34. | Hader, Josh | (htennis) | The 100 Bellarkes | 14.5 |
| 35. | Chapman, Aroldis | (campb227) | James Island Jackwagons | 14.4 |
| 36. | Knebel, Corey | Joshua’s Jets | 14.3 | |
| 37. | Kimbrel, Craig | Bismarck Robbers | 14.4 | |
| 38. | Capps, Carter | (Copp26) | Bartonsville Pumas | 14.4 |
| 39. | Hader, Josh | Boston Americans XX | 14.3 | |
| 40. | Strop, Pedro | (Sheffref) | New York Mets | 14.6 |
| 41. | Boxberger, Brad | (filler) | Miami Cats | 14.3 |
| 42. | Hader, Josh | (paybob21) | Pitty Crushers | 14.3 |
| 43. | Knebel, Corey | (ZGold59320) | Brooklyn Bulldogs | 14.3 |
| 44. | Diaz, Edwin | (Twister2020) | Iowa City Twisters | 14.3 |
| 45. | Chapman, Aroldis | Cheeba Hawks | 14.3 | |
| 46. | Anderson, Nick | (deyanksfan) | Wilmington Blue Rocks | 14.3 |
| 47. | James, Josh | Oak Park Aviators | 14.2 | |
| 48. | Hader, Josh | (Youngerman78) | Bethlehem Bombers | 14.4 |
| 49. | Kahnle, Tommy | (hoopdirt) | Minnesota Snapping Ninja Turtles | 14.3 |
| 50. | Yates, Kirby | (Nomads) | Rockford Riverhawks | 14.2 |