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. | Kimbrel, Craig | (nathaniel20) | Acorn Bears 1-198 | 15.2 |
| 2. | Kimbrel, Craig | (malael) | New York Highlanders | 15.0 |
| 3. | Neris, Hector | (hamburglar) | Werewolf Bar Mitzvahs | 14.9 |
| 4. | Knebel, Corey | (MLBNation) | Boston Speedsters | 14.9 |
| 5. | Betances, Dellin | (babyave1) | House C Hurricanes | 14.9 |
| 6. | Holland, Greg | (kingstreet) | Singapore Slingers | 14.6 |
| 7. | Lidge, Brad | (timyoung) | Kansas City Monarchs | 14.8 |
| 8. | Uehara, Koji | (tsnets) | Boro Jokers | 14.5 |
| 9. | Hader, Josh | Hawaii Volcanos | 14.8 | |
| 10. | Fry, Jace | (Coutinho11) | Hobart Devils | 14.6 |
| 11. | Chapman, Aroldis | (baconfats) | Clubber Langs | 14.5 |
| 12. | Hader, Josh | (htennis) | The 100 Bellarkes | 14.5 |
| 13. | Knebel, Corey | (tda81) | The Dangerous Alliance | 14.3 |
| 14. | Kimbrel, Craig | (B5ELITE) | Cresco Clashers | 14.4 |
| 15. | Hader, Josh | (mattholland1975) | Lone Tree Lions | 14.3 |
| 16. | Edwards, Carl | (zigwiggity) | Las Vegas Beasts | 14.4 |
| 17. | Chapman, Aroldis | (BaltimoreChop) | National Senators 2019 | 14.4 |
| 18. | Kimbrel, Craig | (chapman) | Jokes On You Fighting Clowns | 14.3 |
| 19. | Knebel, Corey | (ImtiazA) | Westerville Fusion | 14.3 |
| 20. | Chapman, Aroldis | (krallel) | Texas Pirates | 14.3 |
| 21. | Kimbrel, Craig | (inouekana) | South Dakota Shadows | 14.3 |
| 22. | Hand, Brad | (cwepner39) | Towson Generals | 14.3 |
| 23. | Kimbrel, Craig | (boomba) | Albuquerque Blue Crystals | 14.2 |
| 24. | Miller, Andrew | (hamburglar) | Werewolf Bar Mitzvahs | 14.2 |
| 25. | Holland, Greg | Chicago Frisbees | 14.2 | |
| 26. | Diaz, Edwin | (mattholland1975) | Charleston Crabs | 14.3 |
| 27. | Kimbrel, Craig | (roguerouge) | Boston Terriers | 14.3 |
| 28. | Barnes, Matt | (tswieton) | Goose Creek Gators | 14.2 |
| 29. | Hader, Josh | (nathaniel20) | Alcoa Patriots 1-16⚾️ | 14.2 |
| 30. | Broxton, Jonathan | PERRYVILLE TIGERS | 14.3 | |
| 31. | Allen, Cody | (dwayne323) | FDDFD MMMBVC | 14.1 |
| 32. | Kimbrel, Craig | (Charlie22) | DC Peeps | 14.2 |
| 33. | Knebel, Corey | (Saint_Ryden) | Carolina Barnstormers | 14.3 |
| 34. | Diaz, Edwin | (FilmClip) | Glens Falls Dragons | 14.2 |
| 35. | Robertson, David | (Warrior) | San Antonio Suns | 14.1 |
| 36. | Betances, Dellin | (Bluesig) | Warihatag Wolves | 14.2 |
| 37. | Betances, Dellin | (me) | Buffalo Bulls | 14.0 |
| 38. | Hader, Josh | (Zigwiggity) | Suplexes Inside Of Duplexes | 14.0 |
| 39. | Chapman, Aroldis | (Hendu42) | Oakland Nine | 14.2 |
| 40. | Clippard, Tyler | (ColinBoucher) | Derelict Winos | 14.1 |
| 41. | Betances, Dellin | (defile) | The Dirtynut | 14.0 |
| 42. | Chapman, Aroldis | (MaurerFanFoLife) | Green Mountain Ghost Runners | 14.1 |
| 43. | Knebel, Corey | (doittoitlars) | Island Coast Gators | 14.1 |
| 44. | Betances, Dellin | (jfletty) | Eau Claire Bears | 14.2 |
| 45. | Givens, Mychal | (louisfelix) | Qc Caps | 14.1 |
| 46. | Kimbrel, Craig | (Rnippe23) | Bartonsville Pumas | 13.9 |
| 47. | Kimbrel, Craig | (Erwin23) | Collinsville Birds | 13.9 |
| 48. | Betances, Dellin | (Consigliere33) | Philadelphia Phillies | 14.0 |
| 49. | Betances, Dellin | (Youngerman78) | Massapequa Mighty | 14.0 |
| 50. | Betances, Dellin | Chicago Eagles | 14.0 |