| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2005 | 
|---|---|---|---|---|---|
| 1 | 496 | Dean Griffiths |  JAM | 48.55 | 48.78 | 
| 2 | 375 | Christian Duma |  GER | 49.17 | 49.17 | 
| 3 | 545 | Dai Tamesue |  JPN | 47.89 | 48.66 | 
| 4 | 973 | James Carter |  USA | 47.57 | 47.95 | 
| 5 | 207 | Felix Sánchez |  DOM | 47.25 | 48.40 | 
| 6 | 708 | Bayano Kamani |  PAN | 48.23 | 48.36 | 
| 7 | 779 | Pieter de Villiers |  RSA | 48.46 | 48.46 | 
| 8 | 248 | Eduardo Iván RodrÃguez |  ESP | 49.08 | 50.18 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2005 | 
|---|---|---|---|---|---|
| 1 | 531 | Kenji Narisako |  JPN | 48.35 | 48.35 | 
| 2 | 179 | Yacnier Luis |  CUB | 48.83 | 49.12 | 
| 3 | 798 | L.J. van Zyl |  RSA | 48.16 | 48.16 | 
| 4 | 551 | Yevgeniy Meleshenko |  KAZ | 48.46 | 49.21 | 
| 5 | 976 | Kerron Clement |  USA | 47.24 | 47.24 | 
| 6 | 507 | Danny McFarlane |  JAM | 48.00 | 48.53 | 
| 7 | 292 | Ari-Pekka Lattu |  FIN | 49.36 | 49.67 | 
| 8 | 357 | Rhys Williams |  GBR | 49.60 | 49.60 | 
| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 2005 | 
|---|---|---|---|---|---|
| 1 | 177 | Sergio Hierrezuelo |  CUB | 49.11 | 49.11 | 
| 2 | 588 | Hadi Soua'an Al-Somaily |  KSA | 47.53 | 49.02 | 
| 3 | 995 | Bershawn Jackson |  USA | 47.62 | 47.62 | 
| 4 | 413 | PeriklÃs Iakovákis |  GRE | 48.17 | 48.24 | 
| 5 | 324 | Naman Keïta |  FRA | 48.17 | 48.27 | 
| 6 | 511 | Kemel Thompson |  JAM | 48.05 | 48.14 | 
| 7 | 462 | Gianni Carabelli |  ITA | 48.84 | 48.84 | 
| 8 | 783 | Llewellyn Herbert |  RSA | 47.81 | 48.57 |