| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 973 | James Carter |
USA
|
47.78 Q SB | 0.146 |
| 2 | 708 | Bayano Kamani |
PAN
|
47.84 Q AR | 0.149 |
| 3 | 207 | Felix Sánchez |
DOM
|
48.24 q SB | 0.154 |
| 4 | 545 | Dai Tamesue |
JPN
|
48.46 q SB | 0.177 |
| 5 | 779 | Pieter de Villiers |
RSA
|
49.75 | 0.135 |
| 6 | 496 | Dean Griffiths |
JAM
|
49.89 | 0.186 |
| 7 | 248 | Eduardo Iván RodrÃguez |
ESP
|
49.97 SB | 0.165 |
| 8 | 375 | Christian Duma |
GER
|
50.25 | 0.155 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 798 | L.J. van Zyl |
RSA
|
48.16 Q PB | 0.183 |
| 2 | 976 | Kerron Clement |
USA
|
48.49 Q | 0.161 |
| 3 | 531 | Kenji Narisako |
JPN
|
49.00 | 0.158 |
| 4 | 551 | Yevgeniy Meleshenko |
KAZ
|
49.22 | 0.148 |
| 5 | 507 | Danny McFarlane |
JAM
|
49.41 | 0.153 |
| 6 | 357 | Rhys Williams |
GBR
|
49.67 | 0.156 |
| 7 | 292 | Ari-Pekka Lattu |
FIN
|
49.81 | 0.202 |
| 179 | Yacnier Luis |
CUB
|
DQ | 0.240 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 995 | Bershawn Jackson |
USA
|
48.19 Q | 0.155 |
| 2 | 324 | Naman Keïta |
FRA
|
48.60 Q | 0.211 |
| 3 | 511 | Kemel Thompson |
JAM
|
48.64 | 0.153 |
| 4 | 588 | Hadi Soua'an Al-Somaily |
KSA
|
49.09 | 0.151 |
| 5 | 413 | PeriklÃs Iakovákis |
GRE
|
49.28 | 0.181 |
| 6 | 177 | Sergio Hierrezuelo |
CUB
|
49.66 | 0.177 |
| 7 | 462 | Gianni Carabelli |
ITA
|
49.77 | 0.188 |
| 8 | 783 | Llewellyn Herbert |
RSA
|
50.69 | 0.156 |