| 1 | Daniel Caines | GBR | 46,43 | Q |
| 2 | Milton Campbell | USA | 46,69 | Q |
| 3 | David Canal | ESP | 47,08 | Q |
| 4 | Davian Clarke | JAM | 47,17 | |
| 5 | Sunday Bada | NGR | 48,14 | |
| Sofiane Labidi | TUN | DQ |
| 1 | Danny McFarlane | JAM | 46,68 | Q |
| 2 | Mark Hylton | GBR | 46,87 | Q |
| 3 | James Davis | USA | 46,90 | Q |
| 4 | Felix Sanchez | DOM | 47,29 | |
| 5 | Boris Gorban | RUS | 47,48 | |
| 6 | Jimisola Laursen | SWE | 48,17 |