| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2004 | 
|---|---|---|---|---|---|
| 1 | 683 | Ruaan Grobler |  RSA | 47.51 | 47.51 | 
| 2 | 54 | Andretti Bain |  BAH | 47.25 | 47.25 | 
| 3 | 895 | LaShawn Merritt |  USA | 45.38 | 45.38 | 
| 4 | 611 | Andrés RodrÃguez |  PAN | 47.02 | 47.02 | 
| 5 | 758 | Manoj Pushpa Kumara |  SRI | 46.56 | 46.56 | 
| 6 | 761 | Nagmeldin Ali Abubakr |  SUD | 45.22 | 45.76 | 
| 7 | 431 | Michael Gardener |  JAM | 47.06 | 47.06 | 
| 8 | 820 | Renny QUOW |  TTO | 46.60 | 46.60 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2004 | 
|---|---|---|---|---|---|
| 1 | 414 | Claudio Licciardello |  ITA | 47.35 | 47.35 | 
| 2 | 454 | Yudai Sasaki |  JPN | 46.85 | 46.85 | 
| 3 | 91 | Obakeng Ngwigwa |  BOT | 46.92 | 46.92 | 
| 4 | 880 | Keith Hinnant |  USA | 46.54 | 46.54 | 
| 5 | 274 | Richard Buck |  GBR | 47.00 | 47.00 | 
| 6 | 30 | Sean Wroe |  AUS | 47.17 | 47.17 | 
| 7 | 455 | Kazunori Ota |  JPN | 46.87 | 47.13 | 
| 8 | 631 | Damian Kempa |  POL | 47.43 | 47.43 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2004 | 
|---|---|---|---|---|---|
| 1 | 163 | Željko Vincek |  CRO | 46.13 | 46.13 | 
| 2 | 185 | Roger Polydore |  DMA | 47.43 | 47.43 | 
| 3 | 698 | Maksim Aleksandrenko |  RUS | 46.69 | 46.69 | 
| 4 | 831 | Serdar Tamac |  TUR | 47.14 | 47.14 | 
| 5 | 712 | Valentin Kruglyakov |  RUS | 46.36 | 46.36 | 
| 6 | 593 | Cory Innes |  NZL | 47.31 | 47.31 | 
| 7 | 31 | Ben Offereins |  AUS | 47.01 | 47.01 | 
| 8 | 94 | Paulo Roberto Orlando |  BRA | 46.58 | 46.58 |