Favorite Teams leagues are not included in Single-Season records. Records only remain for 10 seasons.
Single-Season Leaders (Blocks)
| 1. | Bol, Manute | (dynasty8) | Philadelphia 6ers | 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. | Eaton, Mark | (dmcleaner) | Grand Haven Buccaneers | 439 |
| 7. | Eaton, Mark | (Trilling) | LA Showtime | 438 |
| 8. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 438 |
| 9. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 432 |
| 10. | Eaton, Mark | (farber00) | Hawaii Eruptions | 432 |
| 11. | Mutombo, Dikembe | (Macho_Row) | Central PA Alley Oops | 427 |
| 12. | Eaton, Mark | (filler8) | Coastline Waves | 425 |
| 13. | Eaton, Mark | (dalbpho8) | It’s Foggy | 425 |
| 14. | Eaton, Mark | (roguerouge) | Charlotte Hornets | 418 |
| 15. | Eaton, Mark | (Cardscoach) | Boston Green Lanterns | 418 |
| 16. | Bol, Manute | (farber00) | Hawaii Eruptions | 417 |
| 17. | Bol, Manute | (filler) | Aurora Bruins 88🏀 | 415 |
| 18. | Bol, Manute | (farber00) | Hawaii Eruptions | 413 |
| 19. | Eaton, Mark | (dalbpho8) | It’s Foggy | 411 |
| 20. | Olajuwon, Hakeem | (sytsmab) | Mighty Ballers | 407 |
| 21. | Bol, Manute | (farber00) | Hawaii Eruptions | 407 |
| 22. | Mutombo, Dikembe | (bdavids28) | DR 7 Rowsdowers | 406 |
| 23. | Eaton, Mark | (farber00) | Hawaii Eruptions | 401 |
| 24. | Eaton, Mark | (Cardscoach) | Boston Green Lanterns | 398 |
| 25. | Bol, Manute | (farber00) | Hawaii Eruptions | 397 |
| 26. | Eaton, Mark | (dalbpho8) | It’s Foggy | 396 |
| 27. | Eaton, Mark | (maulucci16) | Norman Walker | 395 |
| 28. | Eaton, Mark | (Joshhuth) | The valley Lake show | 393 |
| 29. | Eaton, Mark | (dmcleaner) | Grand Haven Buccaneers | 391 |
| 30. | Eaton, Mark | (farber00) | Hawaii Eruptions | 391 |
| 31. | Eaton, Mark | (farber00) | Hawaii Eruptions | 391 |
| 32. | Eaton, Mark | (farber00) | Hawaii Eruptions | 390 |
| 33. | Robinson, David | (shane211) | South Dakota Tigers | 389 |
| 34. | Eaton, Mark | (filler8) | Coastline Waves | 387 |
| 35. | Eaton, Mark | (Picklenutt) | Triad Slammin Sloths | 386 |
| 36. | Robinson, David | (sytsmab) | Miami Cats | 386 |
| 37. | Eaton, Mark | (farber00) | Hawaii Eruptions | 385 |
| 38. | Bol, Manute | (Mav54) | Las Vegas Sting | 384 |
| 39. | Robinson, David | (sytsmab) | Sactown Superscrubs | 384 |
| 40. | Mutombo, Dikembe | (Macho_Row) | Central PA Alley Oops | 383 |
| 41. | Mutombo, Dikembe | (chasherm) | Madison Comets | 383 |
| 42. | Eaton, Mark | (maulucci16) | Norman Walker | 383 |
| 43. | Olajuwon, Hakeem | (sytsmab) | LA Lakers | 383 |
| 44. | Olajuwon, Hakeem | Wisco Hoopers | 382 | |
| 45. | Eaton, Mark | (dalbpho8) | It’s Foggy | 382 |
| 46. | Eaton, Mark | (dalbpho8) | It’s Foggy | 380 |
| 47. | Mutombo, Dikembe | (bdavids28) | DH 10 Hunters | 380 |
| 48. | Bol, Manute | (Consigliere33) | Seattle SuperSonics | 378 |
| 49. | Eaton, Mark | (farber00) | Hawaii Eruptions | 378 |
| 50. | Olajuwon, Hakeem | (dynasty) | Carolina Red Wolf | 378 |
