| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 50 | Tyler Christopher |
CAN
|
46.57 Q | 0.253 |
| 2 | 319 | Johan Wissman |
SWE
|
46.86 Q | 0.242 |
| 3 | 9 | Sean Wroe |
AUS
|
47.13 Q PB | 0.257 |
| 4 | 275 | Denis Alekseyev |
RUS
|
47.18 | 0.292 |
| 5 | 34 | California Molefe |
BOT
|
47.74 | 0.342 |
| 6 | 354 | David Neville |
USA
|
48.18 | 0.294 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 17 | Chris Brown |
BAH
|
46.68 Q | 0.254 |
| 2 | 64 | Nery Brenes |
CRC
|
46.85 Q | 0.298 |
| 3 | 279 | Maksim Dyldin |
RUS
|
46.92 Q | 0.257 |
| 4 | 79 | Chris Lloyd |
DMA
|
46.92 | 0.189 |
| 5 | 122 | Richard Buck |
GBR
|
47.60 | 0.232 |
| 6 | 182 | DeWayne Barrett |
JAM
|
48.41 | 0.242 |