Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (BB/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. | DeLeon, Luis | (montgomerybrews) | Montgomery Brewsters | 0.2 |
| 2. | Swindell, Greg | (tbandit1) | NY Eagles | 0.3 |
| 3. | Sanders, Ben | (gt049) | San Francisco Gunslingers | 0.3 |
| 4. | Eller, Hod | (ragingsol) | Helsinki Hot Yoga | 0.3 |
| 5. | Osuna, Roberto | (tribetime89) | Vegas Raiders | 0.3 |
| 6. | Jansen, Kenley | (omar20) | Robertsville Rangers | 0.3 |
| 7. | Morrow, Brandon | (stonemob) | Asheville Predators | 0.3 |
| 8. | Gregerson, Luke | (kingstreet) | Singapore Slingers | 0.3 |
| 9. | Clarkson, John | (hankey23) | Highland Park Highlanders | 0.3 |
| 10. | Eckersley, Dennis | (Zigwiggity) | SoCal Uncensored | 0.3 |
| 11. | Eckersley, Dennis | (welchbw) | Miami Vices | 0.3 |
| 12. | Miller, Andrew | (sgt714) | Chicago Outfit 2 | 0.3 |
| 13. | Melancon, Mark | (Sidneypointers) | Allerton Aces | 0.3 |
| 14. | Rivera, Mariano | (gt049) | Chicago Blackhawks | 0.3 |
| 15. | Reed, Addison | (AtsanBPinetti) | Atsan Bulldogs | 0.3 |
| 16. | Hall, Dick | (redbird63) | Mifflin Mustangs | 0.3 |
| 17. | Lynch, Jack | (markhag1968) | Battle Creek Cereal Kings | 0.4 |
| 18. | Eckersley, Dennis | (michelb3514) | Iowa Corn Pickers | 0.4 |
| 19. | Eckersley, Dennis | (Consigliere33) | Kansas City Royals | 0.4 |
| 20. | Eckersley, Dennis | (Rdizzle13) | Las Vegas Raiders | 0.4 |
| 21. | Ward, John | (Shpennymons) | Patankin Peelers | 0.4 |
| 22. | Fisher, Cherokee | Akron Folks | 0.4 | |
| 23. | Eckersley, Dennis | (Consigliere33) | Chicago Cubs | 0.4 |
| 24. | Eckersley, Dennis | (michelb3514) | Iowa Corn Pickers | 0.4 |
| 25. | Spalding, Al | (Shpennymons) | Coco B-Wares | 0.4 |
| 26. | Miller, Andrew | (screamNchicken) | Boston Bees | 0.4 |
| 27. | Griffith, Clark | (eaakre) | Stephen Tigers | 0.4 |
| 28. | Eckersley, Dennis | (johnmardis) | British Columbia Rockies | 0.4 |
| 29. | Jansen, Kenley | (Bluesig) | Villaviciosa Blue Bears | 0.4 |
| 30. | Spalding, Al | (ManuForti88) | Rhode Island Hurricanes | 0.4 |
| 31. | Clarkson, John | (dunroche) | Visalia Cubs | 0.4 |
| 32. | Eckersley, Dennis | (TramFan) | Sandusky County Blue Sots | 0.4 |
| 33. | Uehara, Koji | (Zuperztar) | Minneapolis Mats | 0.4 |
| 34. | Fingers, Rollie | (gt049) | Chicago Blackhawks | 0.5 |
| 35. | Eckersley, Dennis | (National44) | Gutsey Gamers | 0.5 |
| 36. | Driscoll, Denny | (nymets79) | New York Not This Year | 0.5 |
| 37. | Eckersley, Dennis | (WorcWarr) | Worcester Warriors | 0.5 |
| 38. | Hall, Dick | (dynasty) | Alpine City Valley Boys | 0.5 |
| 39. | Doolittle, Sean | (partin0701) | Brunswick Ballers | 0.5 |
| 40. | Neshek, Pat | (JP311) | Norwich Tornadoes | 0.5 |
| 41. | Doolittle, Sean | (joemcg) | OC Panthers | 0.5 |
| 42. | Hahn, Noodles | (Fungoking) | Pottsville Pinstripes | 0.5 |
| 43. | Ward, John | (Shpennymons) | Patankin Peelers | 0.5 |
| 44. | Peavy, Jake | (Chadgo1) | Miami Monarchs | 0.5 |
| 45. | Young, Cy | (CubanLou) | Miami Cubans | 0.5 |
| 46. | Miller, Andrew | (AtsanBPinetti) | Atsan Bulldogs | 0.5 |
| 47. | Owen, Frank | (tbcgagz) | Colorado Sky Soxx | 0.5 |
| 48. | Bradley, George | (CubanLou) | Miami Cubans | 0.5 |
| 49. | Cummings, Candy | (gibblets1973) | Los Gibbletos 8ight | 0.5 |
| 50. | Eckersley, Dennis | (bostontex24) | B-Town All-Stars | 0.5 |