| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 973 | James Carter |
USA |
47.78 Q SB |
| 2 | 2 | 1 | 708 | Bayano Kamani |
PAN |
47.84 Q AR |
| 3 | 1 | 2 | 798 | L.J. van Zyl |
RSA |
48.16 Q PB |
| 4 | 1 | 3 | 995 | Bershawn Jackson |
USA |
48.19 Q |
| 5 | 3 | 1 | 207 | Felix Sánchez |
DOM |
48.24 q SB |
| 6 | 4 | 1 | 545 | Dai Tamesue |
JPN |
48.46 q SB |
| 7 | 2 | 2 | 976 | Kerron Clement |
USA |
48.49 Q |
| 8 | 2 | 3 | 324 | Naman Keïta |
FRA |
48.60 Q |
| 9 | 3 | 3 | 511 | Kemel Thompson |
JAM |
48.64 |
| 10 | 3 | 2 | 531 | Kenji Narisako |
JPN |
49.00 |
| 11 | 4 | 3 | 588 | Hadi Soua'an Al-Somaily |
KSA |
49.09 |
| 12 | 4 | 2 | 551 | Yevgeniy Meleshenko |
KAZ |
49.22 |
| 13 | 5 | 3 | 413 | PeriklÃs Iakovákis |
GRE |
49.28 |
| 14 | 5 | 2 | 507 | Danny McFarlane |
JAM |
49.41 |
| 15 | 6 | 3 | 177 | Sergio Hierrezuelo |
CUB |
49.66 |
| 16 | 6 | 2 | 357 | Rhys Williams |
GBR |
49.67 |
| 17 | 5 | 1 | 779 | Pieter de Villiers |
RSA |
49.75 |
| 18 | 7 | 3 | 462 | Gianni Carabelli |
ITA |
49.77 |
| 19 | 7 | 2 | 292 | Ari-Pekka Lattu |
FIN |
49.81 |
| 20 | 6 | 1 | 496 | Dean Griffiths |
JAM |
49.89 |
| 21 | 7 | 1 | 248 | Eduardo Iván RodrÃguez |
ESP |
49.97 SB |
| 22 | 8 | 1 | 375 | Christian Duma |
GER |
50.25 |
| 23 | 8 | 3 | 783 | Llewellyn Herbert |
RSA |
50.69 |
| 2 | 179 | Yacnier Luis |
CUB |
DQ |