| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1173 | Kerron Clement |
USA
|
48.00 Q SB | 0.158 |
| 2 | 329 | Felix Sánchez |
DOM
|
48.34 Q SB | 0.154 |
| 3 | 948 | Javier Culson |
PUR
|
48.43 Q | 0.176 |
| 4 | 671 | Danny McFarlane |
JAM
|
48.49 q | 0.161 |
| 5 | 1112 | Jehue Gordon |
TTO
|
48.77 q | 0.162 |
| 6 | 979 | L.J. van Zyl |
RSA
|
48.80 | 0.168 |
| 7 | 1163 | Andrés Silva |
URU
|
49.34 NR | 0.143 |
| 8 | 133 | Brendan Cole |
AUS
|
49.92 | 0.186 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1191 | Bershawn Jackson |
USA
|
48.23 Q | 0.146 |
| 2 | 509 | David GREENE |
GBR
|
48.27 Q PB | 0.156 |
| 3 | 583 | PeriklÃs Iakovákis |
GRE
|
48.73 Q SB | 0.180 |
| 4 | 673 | Isa Phillips |
JAM
|
48.93 | 0.238 |
| 5 | 294 | Omar Cisneros |
CUB
|
49.21 | 0.189 |
| 6 | 1176 | Johnny Dutch |
USA
|
49.28 | 0.164 |
| 7 | 131 | Tristan Thomas |
AUS
|
49.76 | 0.160 |
| 8 | 712 | Kazuaki Yoshida |
JPN
|
50.34 | 0.175 |