| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2010 | 
|---|---|---|---|---|---|
| 1 | 178 | Pako Seribe |  BOT | 46.48 | 47.02 | 
| 2 | 287 | LuguelÃn SANTOS |  DOM | 46.19 | 46.19 | 
| 3 | 893 | Joshua Mance |  USA | 45.90 | 45.90 | 
| 4 | 467 | Marcell Deák Nagy |  HUN | 46.03 | 46.03 | 
| 5 | 431 | Marco Kaiser |  GER | 46.30 | 46.30 | 
| 6 | 459 | Kirani JAMES |  GRN | 45.01 | 45.01 | 
| 7 | 224 | Alistair Moona |  CAN | 46.54 | 46.54 | 
| 8 | 897 | Errol Nolan |  USA | 45.59 | 45.59 |