Jermaine O'Neal had the most Blocks in a game in 2002-03 with 10.
Jermaine O'Neal shares the top spot with Ben Wallace.
| Rk | Player | Team | Date | Blocks |
|---|---|---|---|---|
| 1 | JO Jermaine O'Neal![]() | IND | 2003-01-22 | 10 |
| 2 | BW Ben Wallace![]() | DET | 2002-11-20 | 10 |
| 3 | TR Theo Ratliff![]() | ATL | 2003-02-02 | 9 |
| 4 | TR Theo Ratliff![]() | ATL | 2003-02-14 | 9 |
| 5 | TR Theo Ratliff![]() | ATL | 2003-03-22 | 9 |
| 6 | BW Ben Wallace![]() | DET | 2003-03-20 | 9 |
| 7 | AF Adonal Foyle![]() | GSW | 2003-02-21 | 9 |
| 8 | RN Rasho Nesterovic![]() | MIN | 2003-03-10 | 9 |
| 9 | SB Shawn Bradley![]() | DAL | 2002-11-08 | 8 |
| 10 | SB Shawn Bradley![]() | DAL | 2002-12-14 | 8 |
| 11 | JO Jermaine O'Neal![]() | IND | 2003-01-26 | 8 |
| 12 | TD Tim Duncan![]() | SAS | 2002-12-06 | 8 |
| 13 | TD Tim Duncan![]() | SAS | 2003-06-15 | 8 |
| 14 | AF Adonal Foyle![]() | GSW | 2002-11-20 | 8 |
| 15 | KC Keon Clark![]() | SAC | 2003-01-05 | 8 |