Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Blocks)
| 1. | Bol, Manute | (filler8) | 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 | (dmcleaner) | Grand Haven Buccaneers | 439 |
| 10. | Eaton, Mark | (Trilling) | LA Showtime | 438 |
| 11. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 438 |
| 12. | Eaton, Mark | (kingstreet) | Singapore Slingers | 437 |
| 13. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 432 |
| 14. | Eaton, Mark | (farber00) | Hawaii Eruptions | 432 |
| 15. | Mutombo, Dikembe | (mgm7) | Central PA Alley Oops | 427 |
| 16. | Eaton, Mark | Coastline Waves | 425 | |
| 17. | Eaton, Mark | (dalbpho8) | It’s Foggy | 425 |
| 18. | Eaton, Mark | (kingstreet) | Singapore Slingers | 422 |
| 19. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 418 |
| 20. | Eaton, Mark | (OklahomaRob) | OKC Thunder | 418 |
| 21. | Bol, Manute | (farber00) | Hawaii Eruptions | 417 |
| 22. | Bol, Manute | (walle-1) | Denver Eagles | 415 |
| 23. | Bol, Manute | (farber00) | Hawaii Eruptions | 413 |
| 24. | Eaton, Mark | (dalbpho8) | It’s Foggy | 411 |
| 25. | Eaton, Mark | (kingstreet) | Singapore Slingers | 409 |
| 26. | Olajuwon, Hakeem | (filler) | Atlanta Gorillas | 407 |
| 27. | Bol, Manute | (farber00) | Hawaii Eruptions | 407 |
| 28. | Eaton, Mark | (kingstreet) | Singapore Slingers | 406 |
| 29. | Mutombo, Dikembe | (filler8) | Atlanta Gorillas | 406 |
| 30. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 404 |
| 31. | Eaton, Mark | (maulucci16) | Norman Walker | 403 |
| 32. | Eaton, Mark | (farber00) | Hawaii Eruptions | 403 |
| 33. | Eaton, Mark | (filler) | Pittsburgh Plunder | 402 |
| 34. | Eaton, Mark | (farber00) | Hawaii Eruptions | 401 |
| 35. | Mutombo, Dikembe | (Mav54) | Miami Cats | 398 |
| 36. | Eaton, Mark | (OklahomaRob) | OKC Thunder | 398 |
| 37. | Bol, Manute | (farber00) | Hawaii Eruptions | 397 |
| 38. | Eaton, Mark | (dalbpho8) | It’s Foggy | 396 |
| 39. | Eaton, Mark | (maulucci16) | Norman Walker | 395 |
| 40. | Eaton, Mark | (dynasty) | Dallas Mustangs | 393 |
| 41. | Eaton, Mark | (dmcleaner) | Grand Haven Buccaneers | 391 |
| 42. | Eaton, Mark | (farber00) | Hawaii Eruptions | 391 |
| 43. | Eaton, Mark | (farber00) | Hawaii Eruptions | 391 |
| 44. | Eaton, Mark | (farber00) | Hawaii Eruptions | 390 |
| 45. | Robinson, David | (shane211) | South Dakota Tigers | 389 |
| 46. | Eaton, Mark | Coastline Waves | 387 | |
| 47. | Eaton, Mark | Portland Vikings | 386 | |
| 48. | Robinson, David | (Mav54) | Miami Cats | 386 |
| 49. | Eaton, Mark | (farber00) | Hawaii Eruptions | 385 |
| 50. | Bol, Manute | (Mav54) | Las Vegas Sting | 384 |
