Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (GIDP)
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. | Evans, Dwight | (Warrior) | Kansas City Royals | 58 |
| 2. | Post, Wally | Toronto Bulls | 53 | |
| 3. | Howard, Frank | (Acorn) | New Britain Mess | 53 |
| 4. | Williams, Ted | (LDJS1947) | JUNKYARD DOGS | 53 |
| 5. | Palmeiro, Rafael | Canandaigua Chickens | 52 | |
| 6. | Hebner, Richie | Diamond Dons '70s | 51 | |
| 7. | Helton, Todd | (michelb3514) | Iowa Corn Pickers | 51 |
| 8. | Downing, Brian | (Trux) | Grand Canyon 66ers | 51 |
| 9. | Bell, Buddy | (kingstreet) | Singapore Slingers | 51 |
| 10. | Pujols, Albert | (Don55) | BB Bluefish | 51 |
| 11. | Gurriel, Yuli | (bennich) | Luna City Unicorns | 51 |
| 12. | Martinez, Tino | (rfb60609) | Wormsleyburg Warriors | 50 |
| 13. | Oliva, Tony | (maharacer) | Miami Sharks | 50 |
| 14. | Ordonez, Magglio | (michelb3514) | Iowa Corn Pickers | 49 |
| 15. | Mattingly, Don | Staten Island Spirit | 49 | |
| 16. | Simmons, Ted | (WorcWarr) | Worcester Warriors | 49 |
| 17. | McCormick, Frank | (filler) | No Good Sons of Pitches | 49 |
| 18. | Piazza, Mike | Bartonsville Pumas | 49 | |
| 19. | Slaughter, Enos | Los Angeles Brew 102's | 49 | |
| 20. | Gwynn, Tony | (michelb3514) | Iowa Corn Pickers | 49 |
| 21. | Gonzalez, Tony | (liddlefeat) | Trenton Thunder | 49 |
| 22. | Gordon, Sid | (garret) | BTOWN Bombers | 49 |
| 23. | Clements, Jack | (samwhitworth) | West Dakota Slime | 49 |
| 24. | Bonura, Zeke | (missingmlb) | Gainesville Gators | 49 |
| 25. | McCormick, Frank | (Stevegiles10) | Middle Georgia 20-39 Rowdy Renegades | 49 |
| 26. | Rice, Jim | Las Vegas Vegan Vampires | 49 | |
| 27. | Clements, Jack | Punta Cana Toro's | 49 | |
| 28. | Mattingly, Don | (konakev) | Kona XStamper 80 | 49 |
| 29. | Bench, Johnny | (jackfactor) | Malibu Sharks | 49 |
| 30. | Sauer, Hank | (frand) | Baltimore Blackbirds | 48 |
| 31. | Clements, Jack | (athlete4) | Hopwood Hacks | 48 |
| 32. | Bonura, Zeke | (bwoodcoc) | Roanoke Renegades | 48 |
| 33. | Campanella, Roy | (Travdaddg23) | Crystal City Malingerers | 48 |
| 34. | Bonura, Zeke | (chasherm) | Baraboo Circus | 48 |
| 35. | Clements, Jack | (hootjohnson) | Titcombtown Cannonballs | 48 |
| 36. | Garciaparra, Nomar | (batista) | JERSEY SHORE BADLANDS | 48 |
| 37. | Downing, Brian | (tgbsbl1967) | Madagascar Bluebirds | 48 |
| 38. | Robinson, Brooks | (REVEJB) | Ballantine Conetops | 48 |
| 39. | Helton, Todd | (michelb3514) | Iowa Corn Pickers | 48 |
| 40. | Davis, Alvin | Baltimore Burners | 48 | |
| 41. | Olerud, John | (maharacer) | Chicago Cows | 48 |
| 42. | Mattingly, Don | (iceman18) | New York Mets | 47 |
| 43. | Davis, Alvin | (montgomerybrews) | Montgomery Brewsters | 47 |
| 44. | Carter, Gary | (Warrior) | Kansas City Royals | 47 |
| 45. | Campanella, Roy | (filler) | Tampa Tarpons | 47 |
| 46. | Simmons, Ted | (montgomerybrews) | Montgomery Brewsters | 47 |
| 47. | Moore, Johnny | (filler) | GLOBEX Corporation | 47 |
| 48. | Palmeiro, Rafael | (broles) | Winnipeg Vikings | 47 |
| 49. | Horner, Bob | Cleveland Hats For Bats | 47 | |
| 50. | Davis, Chili | San Francisco Crabs | 47 |