| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 191 | Alleyne Francique |  GRN | 45.54 SB | 0.243 | 
| 2 | 36 | California Molefe |  BOT | 45.75 | 0.240 | 
| 3 | 20 | Chris Brown |  BAH | 45.78 NR | 0.255 | 
| 4 | 232 | Davian Clarke |  JAM | 45.93 SB | 0.242 | 
| 5 | 482 | Milton Campbell |  USA | 46.15 SB | 0.194 | 
| 6 | 371 | Dmitriy Petrov |  RUS | 47.33 | 0.200 |