Dikembe Mutombo had the most Blocks in a game in 1999-00 with 11.
That is 2 more blocks than the next-best mark on this list.
| Rk | Player | Team | Date | Blocks |
|---|---|---|---|---|
| 1 | DM Dikembe Mutombo![]() | ATL | 2000-02-15 | 11 |
| 2 | DM Dikembe Mutombo![]() | ATL | 1999-12-23 | 9 |
| 3 | AM Alonzo Mourning![]() | MIA | 1999-12-18 | 9 |
| 4 | AM Alonzo Mourning![]() | MIA | 2000-01-06 | 9 |
| 5 | AM Alonzo Mourning![]() | MIA | 2000-04-22 | 9 |
| 6 | RL Raef LaFrentz![]() | DEN | 2000-01-08 | 9 |
| 7 | JM Jim McIlvaine![]() | NJN | 2000-02-28 | 8 |
| 8 | DM Dikembe Mutombo![]() | ATL | 1999-12-11 | 8 |
| 9 | DM Dikembe Mutombo![]() | ATL | 2000-02-23 | 8 |
| 10 | DM Dikembe Mutombo![]() | ATL | 2000-02-26 | 8 |
| 11 | AM Alonzo Mourning![]() | MIA | 1999-12-06 | 8 |
| 12 | AM Alonzo Mourning![]() | MIA | 1999-12-10 | 8 |
| 13 | AM Alonzo Mourning![]() | MIA | 2000-02-15 | 8 |
| 14 | SO Shaquille O'Neal![]() | LAL | 1999-11-15 | 8 |
| 15 | SO Shaquille O'Neal![]() | LAL | 2000-03-31 | 8 |