| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1 | Bershawn Jackson |
USA
|
48.05 | 0.173 |
| 2 | 6 | Kemel Thompson |
JAM
|
48.09 SB | 0.182 |
| 3 | 5 | L.J. van Zyl |
RSA
|
48.11 PB | 0.174 |
| 4 | 4 | Naman Keïta |
FRA
|
48.36 | 0.188 |
| 5 | 2 | James Carter |
USA
|
48.62 | 0.162 |
| 6 | 3 | Bayano Kamani |
PAN
|
49.30 | 0.157 |
| 7 | 8 | Gianni Carabelli |
ITA
|
49.84 | 0.220 |
| 8 | 7 | Ian Weakley |
JAM
|
50.72 | 0.210 |