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 | (Zigwiggity) | Toronto Bulls | 53 |
| 3. | Howard, Frank | (Acorn) | New Britain Mess | 53 |
| 4. | Palmeiro, Rafael | Canandaigua Chickens | 52 | |
| 5. | Hebner, Richie | (astrodomer) | Houston Oilers | 51 |
| 6. | Gurriel, Yuli | (dynasty) | Luna City Unicorns | 51 |
| 7. | Downing, Brian | (Trux) | Grand Canyon 66ers | 51 |
| 8. | Helton, Todd | (michelb3514) | Iowa Corn Pickers | 51 |
| 9. | Pujols, Albert | (bishop427) | Carolina Bluefish | 51 |
| 10. | Oliva, Tony | Miami Sharks | 50 | |
| 11. | Martinez, Tino | (rfb60609) | Wormsleyburg Warriors | 50 |
| 12. | Gonzalez, Tony | (liddlefeat) | Trenton Thunder | 49 |
| 13. | Mattingly, Don | (Matt12) | Staten Island Spirit | 49 |
| 14. | Gwynn, Tony | (michelb3514) | Iowa Corn Pickers | 49 |
| 15. | Piazza, Mike | (dzach) | Mars Investigations | 49 |
| 16. | Ordonez, Magglio | (Trulaia) | Iowa Corn Pickers | 49 |
| 17. | Mattingly, Don | (justin) | Kona XStamper 80 | 49 |
| 18. | McCormick, Frank | No Good Sons of Pitches | 49 | |
| 19. | Rice, Jim | Las Vegas Avatars | 49 | |
| 20. | Slaughter, Enos | Los Angeles Brew 102's | 49 | |
| 21. | McCormick, Frank | Middle Georgia 20-39 Rowdy Renegades | 49 | |
| 22. | Madlock, Bill | (Kaline65) | Green Bay Spirit | 49 |
| 23. | Clements, Jack | (sthompson77566) | Blue Sharks | 49 |
| 24. | Bonura, Zeke | (dynasty) | Gainesville Gators | 49 |
| 25. | Bench, Johnny | (JP311) | Malibu Sharks | 49 |
| 26. | Gordon, Sid | (filler) | BTOWN Bombers | 49 |
| 27. | Clements, Jack | (samwhitworth) | West Dakota Slime | 49 |
| 28. | Simmons, Ted | (WorcWarr) | Worcester Warriors | 49 |
| 29. | Garciaparra, Nomar | (batista) | JERSEY SHORE BADLANDS | 48 |
| 30. | Clements, Jack | Hopwood Hacks | 48 | |
| 31. | Blomberg, Ron | St. Paul Panthers | 48 | |
| 32. | Olerud, John | (ranger) | DAYTONA DEFENDERS | 48 |
| 33. | McCovey, Willie | Portland Bounty | 48 | |
| 34. | Downing, Brian | (tgbsbl1967) | Madagascar Bluebirds | 48 |
| 35. | Carty, Rico | Chesapeake Pelicans | 48 | |
| 36. | Helton, Todd | (Trulaia) | Iowa Corn Pickers | 48 |
| 37. | Campanella, Roy | (ndekar) | Crystal City Malingerers | 48 |
| 38. | Bonura, Zeke | (bwoodcoc) | Roanoke Renegades | 48 |
| 39. | Sauer, Hank | (TheGoldenFog) | Baltimore Blackbirds | 48 |
| 40. | Robinson, Brooks | Ballantine Conetops | 48 | |
| 41. | Clements, Jack | (bmilliron) | Buckley Vikings | 48 |
| 42. | Davis, Alvin | (dynasty) | Baltimore Burners | 48 |
| 43. | Bonura, Zeke | (chasherm) | Baraboo Circus | 48 |
| 44. | Francona, Tito | Arkansas Fighting Pigs | 47 | |
| 45. | Davis, Chili | (KP1010) | San Francisco Crabs. 🦀 | 47 |
| 46. | Palmeiro, Rafael | Winnipeg Vikings | 47 | |
| 47. | Carter, Gary | (Warrior) | Kansas City Royals | 47 |
| 48. | Boggs, Wade | (revh) | New Brunswick NEW SIDE | 47 |
| 49. | Davis, Alvin | (montgomerybrews) | Montgomery Brewsters | 47 |
| 50. | Carter, Gary | Toledo Mighty Hens | 47 |