Manute Bol led the NBA in Blocks in 1989-90 with 13.
That is 1 more blocks than second-place Hakeem Olajuwon.
| Rk | Player | Team | Date | Value |
|---|---|---|---|---|
| 1 | Manute Bol | GOS | 1990-02-02 | 13 |
| 2 | Hakeem Olajuwon | HOU | 1989-11-11 | 12 |
| 3 | David Robinson | SAN | 1990-02-23 | 12 |
| 4 | Hakeem Olajuwon | HOU | 1990-03-03 | 11 |
| 5 | Hakeem Olajuwon | HOU | 1990-03-29 | 11 |
| 6 | David Robinson | SAN | 1990-02-02 | 11 |
| 7 | David Robinson | SAN | 1990-02-20 | 10 |
| 8 | Charles Jones | WAS | 1990-03-03 | 10 |
| 9 | Hakeem Olajuwon | HOU | 1990-04-29 | 10 |
| 10 | Hakeem Olajuwon | HOU | 1989-12-17 | 10 |
| 11 | Manute Bol | GOS | 1990-03-12 | 10 |
| 12 | David Robinson | SAN | 1990-02-17 | 9 |
| 13 | Randy Breuer | MIN | 1990-04-13 | 9 |
| 14 | Hakeem Olajuwon | HOU | 1990-02-19 | 9 |
| 15 | Patrick Ewing | NYK | 1990-04-06 | 9 |