| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 224 | Davian Clarke |
JAM
|
46.34 Q | 0.227 |
| 2 | 65 | Gary Kikaya |
COD
|
46.46 Q SB | 0.147 |
| 3 | 422 | Joe Mendel |
USA
|
46.56 Q | 0.162 |
| 4 | 94 | David Canal |
ESP
|
46.70 | 0.195 |
| 5 | 209 | David McCarthy |
IRL
|
47.34 | 0.169 |
| 6 | 10 | Casey Vincent |
AUS
|
47.68 | 0.158 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 188 | Alleyne Francique |
GRN
|
46.32 Q | 0.164 |
| 2 | 394 | Sofiane Labidi |
TUN
|
46.61 Q | 0.158 |
| 3 | 409 | Milton Campbell |
USA
|
46.67 Q | 0.220 |
| 4 | 16 | Chris Brown |
BAH
|
46.68 | 0.155 |
| 5 | 225 | Gregory Haughton |
JAM
|
46.81 | 0.246 |
| 6 | 195 | Zsolt Szeglet |
HUN
|
47.16 | 0.194 |