Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Blocks)
| 1. | Bol, Manute | Phoenix Suns | 567 | |
| 2. | Eaton, Mark | (Trilling) | LA Showtime | 478 |
| 3. | Bol, Manute | (Trilling) | LA Showtime | 471 |
| 4. | Eaton, Mark | (dmcleaner) | Grand Haven Buccaneers | 471 |
| 5. | Eaton, Mark | (dmcleaner) | Grand Haven Buccaneers | 456 |
| 6. | Bol, Manute | (farber00) | Hawaii Eruptions | 452 |
| 7. | Eaton, Mark | (maulucci16) | Norman Walker | 446 |
| 8. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 446 |
| 9. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 438 |
| 10. | Eaton, Mark | (Trilling) | LA Showtime | 438 |
| 11. | Eaton, Mark | Boston Celts | 437 | |
| 12. | Eaton, Mark | (farber00) | Hawaii Eruptions | 432 |
| 13. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 432 |
| 14. | Mutombo, Dikembe | Central PA Alley Oops | 427 | |
| 15. | Eaton, Mark | Coastline Waves | 425 | |
| 16. | Eaton, Mark | (dshearer) | Boston Bulldogs | 425 |
| 17. | Eaton, Mark | (maulucci16) | Norman Walker | 422 |
| 18. | Eaton, Mark | Boston Celts | 422 | |
| 19. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 418 |
| 20. | Eaton, Mark | New Jersey Nets | 418 | |
| 21. | Bol, Manute | (farber00) | Hawaii Eruptions | 417 |
| 22. | Bol, Manute | (walle-1) | Toronto Tigers | 415 |
| 23. | Eaton, Mark | (kingstreet) | SG Slingers | 414 |
| 24. | Bol, Manute | (farber00) | Hawaii Eruptions | 413 |
| 25. | Eaton, Mark | (dshearer) | Boston Bulldogs | 411 |
| 26. | Eaton, Mark | Boston Celts | 409 | |
| 27. | Eaton, Mark | Boston Celts | 409 | |
| 28. | Olajuwon, Hakeem | (filler) | Sacramento Lions | 407 |
| 29. | Bol, Manute | (farber00) | Hawaii Eruptions | 407 |
| 30. | Eaton, Mark | Boston Celts | 406 | |
| 31. | Mutombo, Dikembe | (filler8) | San Diego Sharks | 406 |
| 32. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 404 |
| 33. | Eaton, Mark | (maulucci16) | Norman Walker | 403 |
| 34. | Eaton, Mark | (farber00) | Hawaii Eruptions | 403 |
| 35. | Eaton, Mark | (filler) | Minnesota Frogs | 402 |
| 36. | Eaton, Mark | (farber00) | Hawaii Eruptions | 401 |
| 37. | Eaton, Mark | New Jersey Nets | 398 | |
| 38. | Mutombo, Dikembe | (Mav54) | Miami Cats | 398 |
| 39. | Bol, Manute | (farber00) | Hawaii Eruptions | 397 |
| 40. | Eaton, Mark | (farber00) | Hawaii Eruptions | 397 |
| 41. | Eaton, Mark | (dshearer) | Boston Bulldogs | 396 |
| 42. | Eaton, Mark | (maulucci16) | Norman Walker | 395 |
| 43. | Hayes, Elvin | (jamin) | Chester Springs Menjai | 394 |
| 44. | Eaton, Mark | (dynasty) | Portland Vikings | 393 |
| 45. | Eaton, Mark | (dmcleaner) | Grand Haven Buccaneers | 391 |
| 46. | Eaton, Mark | (farber00) | Hawaii Eruptions | 391 |
| 47. | Eaton, Mark | (farber00) | Hawaii Eruptions | 391 |
| 48. | Eaton, Mark | (farber00) | Hawaii Eruptions | 390 |
| 49. | Robinson, David | (shane211) | South Dakota Tigers | 389 |
| 50. | Eaton, Mark | Coastline Waves | 387 |
