Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (WHIP)
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. | Miller, Andrew | (jamin) | Chester Springs Menjai | 0.42 |
| 2. | Putz, J.J. | (nycubsfan) | Rochester Red Wings | 0.42 |
| 3. | Saito, Takashi | Ladson Dodgers | 0.46 | |
| 4. | Papelbon, Jonathan | (nycubsfan) | San Antonio Texans | 0.46 |
| 5. | Beck, Rod | (chaaad) | Aragua Tigres | 0.47 |
| 6. | Pagan, Emilio | (DEVON311) | SEARCY COPPERHEADS | 0.48 |
| 7. | Hernandez, David | (baltimorechop) | Hagerstown Suns | 0.48 |
| 8. | Nen, Robb | (richgibson) | Pentagon CaNNoN FoDDe R | 0.48 |
| 9. | Capps, Carter | (tbone34) | Urinal Cakes | 0.48 |
| 10. | Davis, Wade | (rreebe916) | Columbia Lions🇺🇦 | 0.49 |
| 11. | Eckersley, Dennis | (dynasty) | LaCrosse Loggers | 0.49 |
| 12. | Eckersley, Dennis | (arcticwolf30) | Las Vegas Gamblers | 0.50 |
| 13. | Holland, Greg | (HaloFire) | Staten Island Tanks | 0.50 |
| 14. | Percival, Troy | (Kaline65) | DETROIT TIGERSs | 0.50 |
| 15. | Rivera, Mariano | Hitless Wonders | 0.50 | |
| 16. | Ellis, Sammy | Carolina Copperheads | 0.50 | |
| 17. | Rivera, Mariano | (WorcWarr) | Worcester Warriors | 0.51 |
| 18. | Uehara, Koji | (tgbsbl1967) | Washington Senators | 0.51 |
| 19. | Hochevar, Luke | (paranoid) | Las Vegas Lounge Lizards | 0.53 |
| 20. | Doolittle, Sean | (chaaad) | Columbia Lions | 0.53 |
| 21. | Smith, Lee | (kingstreet) | Singapore Straits Tigers | 0.53 |
| 22. | Gregerson, Luke | (filler) | Las Vegas Scorpions | 0.53 |
| 23. | Broxton, Jonathan | (Wileydog97) | Raleigh Hoteliers | 0.53 |
| 24. | Doolittle, Sean | (nycubsfan) | American Pharoahs | 0.54 |
| 25. | Ottavino, Adam | (roguerouge) | Iowa Fighting Pigs | 0.54 |
| 26. | Papelbon, Jonathan | (skooler1) | Dallas Cowboys | 0.54 |
| 27. | Hochevar, Luke | (ranger) | VALDOSTA VOLCANOES | 0.54 |
| 28. | Nathan, Joe | (nycubsfan) | Spring Bearkats | 0.54 |
| 29. | Zimmerman, Jeff | (Ikej) | New England Vikings | 0.55 |
| 30. | Holland, Greg | (clemens300) | Fredricksburg Feds | 0.55 |
| 31. | Boxberger, Brad | (tgbbirch) | Raleigh Raiders | 0.55 |
| 32. | Parker, Blake | (Mortamar1966) | Hazelhurst Walnut Pickers | 0.55 |
| 33. | Wilkinson, Bill | (Searcy) | Oklahoma Demons | 0.55 |
| 34. | Britton, Zach | (dunroche) | Toledo Mudhens | 0.55 |
| 35. | Guerrier, Matt | San Diego Suns | 0.56 | |
| 36. | Rivera, Mariano | (nycubsfan) | Jackson Heights Nittany Lions | 0.56 |
| 37. | Sasaki, Kazuhiro | (Artinshki) | 2000s Two Baggers | 0.56 |
| 38. | Waddell, Tom | (Majestic44) | Santa cruz Stingers | 0.56 |
| 39. | Pagan, Emilio | (LDJS1947) | MISSOURI TIGERS | 0.56 |
| 40. | Doolittle, Sean | (JohnHeidy) | Rosemount Red Stockings | 0.56 |
| 41. | Jansen, Kenley | (filler) | Beloit Snappers | 0.57 |
| 42. | Jansen, Kenley | (Ruthbonds) | Stooky Stooky | 0.57 |
| 43. | Holland, Greg | (rfb60609) | Elysburg Parkers | 0.57 |
| 44. | Wagner, Billy | (michelb3514) | Iowa Corn Pickers | 0.57 |
| 45. | Benitez, Armando | (harrison_gascho) | Southern Tenants Farmers UNION | 0.57 |
| 46. | Holland, Greg | (bnewman58) | New Jack City Miscreants | 0.57 |
| 47. | Doolittle, Sean | (nycubsfan) | San Antonio Texans | 0.57 |
| 48. | Nen, Robb | (bush484) | Canton Lumber Company | 0.57 |
| 49. | Jansen, Kenley | (nycubsfan) | Huntsville Bearkats | 0.57 |
| 50. | Miller, Andrew | (vanderj6993) | Marvin's Martians | 0.57 |