| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 865 | Javier Culson |
PUR
|
48.52 Q | 0.203 |
| 2 | 882 | Cornel Fredericks |
RSA
|
48.83 Q | 0.143 |
| 3 | 1126 | Angelo Taylor |
USA
|
48.86 q | 0.171 |
| 4 | 1059 | Jeshua Anderson |
USA
|
49.33 | 0.172 |
| 5 | 440 | Jack Green |
GBR
|
49.62 | 0.199 |
| 6 | 1051 | Stanislav Melnykov |
UKR
|
49.74 | 0.183 |
| 7 | 621 | Takayuki KISHIMOTO |
JPN
|
50.05 | 0.148 |
| 8 | 603 | Josef Robertson |
JAM
|
50.39 | 0.156 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 441 | David GREENE |
GBR
|
48.62 Q | 0.147 |
| 2 | 306 | Felix Sánchez |
DOM
|
49.01 Q | 0.199 |
| 3 | 1010 | Jehue Gordon |
TTO
|
49.08 | 0.167 |
| 4 | 599 | Isa Phillips |
JAM
|
49.16 | 0.269 |
| 5 | 1058 | Andrés Silva |
URU
|
49.63 | 0.200 |
| 6 | 954 | Emir Bekric |
SRB
|
49.94 | 0.160 |
| 7 | 203 | Mahau SUGUIMATI |
BRA
|
50.89 | 0.174 |
| 8 | 1070 | Kerron Clement |
USA
|
52.11 | 0.162 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1087 | Bershawn Jackson |
USA
|
48.80 Q | 0.174 |
| 2 | 900 | L.J. van Zyl |
RSA
|
49.05 Q | 0.193 |
| 3 | 906 | Aleksandr Derevyagin |
RUS
|
49.07 q SB | 0.172 |
| 4 | 595 | Leford Green |
JAM
|
49.29 | 0.208 |
| 5 | 479 | Georg Fleischhauer |
GER
|
49.36 | 0.144 |
| 6 | 465 | Nathan Woodward |
GBR
|
49.57 | 0.150 |
| 7 | 657 | Vincent Kiplangat Kosgei |
KEN
|
49.71 | 0.176 |
| 8 | 277 | Omar Cisneros |
CUB
|
50.10 | 0.189 |