| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2011 | 
|---|---|---|---|---|---|
| 1 | 1126 | Angelo Taylor |  USA | 47.25 | 47.94 | 
| 2 | 906 | Aleksandr Derevyagin |  RUS | 49.00 | 49.07 | 
| 3 | 865 | Javier Culson |  PUR | 47.72 | 48.33 | 
| 4 | 882 | Cornel Fredericks |  RSA | 48.14 | 48.14 | 
| 5 | 1087 | Bershawn Jackson |  USA | 47.30 | 47.93 | 
| 6 | 441 | David GREENE |  GBR | 47.88 | 48.20 | 
| 7 | 306 | Felix Sánchez |  DOM | 47.25 | 48.74 | 
| 8 | 900 | L.J. van Zyl |  RSA | 47.66 | 47.66 |