| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1099 | LaShawn Merritt |
USA
|
44.76 Q | 0.284 |
| 2 | 171 | Kévin BORLÉE |
BEL
|
45.02 Q | 0.156 |
| 3 | 963 | Rabah YOUSIF |
SUD
|
45.43 | 0.161 |
| 4 | 1013 | Renny QUOW |
TTO
|
45.72 | 0.189 |
| 5 | 158 | Ramon Miller |
BAH
|
45.88 | 0.235 |
| 6 | 618 | Yuzo Kanemaru |
JPN
|
46.11 | 0.171 |
| 7 | 278 | Williams Collazo |
CUB
|
46.13 | 0.145 |
| 8 | 303 | Erison Hurtault |
DMA
|
46.41 | 0.163 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 525 | Kirani JAMES |
GRN
|
45.20 Q | 0.174 |
| 2 | 565 | Tabarie Henry |
ISV
|
45.53 Q | 0.199 |
| 3 | 154 | Chris Brown |
BAH
|
45.54 | 0.159 |
| 4 | 1131 | Jamaal Torrance |
USA
|
45.73 | 0.265 |
| 5 | 271 | Nery Brenes |
CRC
|
45.93 | 0.176 |
| 6 | 840 | Marcin Marciniszyn |
POL
|
45.94 | 0.191 |
| 7 | 456 | Martyn ROONEY |
GBR
|
46.09 | 0.198 |
| 8 | 596 | Riker Hylton |
JAM
|
46.99 | 0.202 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 594 | Jermaine Gonzales |
JAM
|
44.99 Q | 0.160 |
| 2 | 170 | Jonathan BORLÉE |
BEL
|
45.14 Q | 0.155 |
| 3 | 524 | Rondell Bartholomew |
GRN
|
45.17 q | 0.192 |
| 4 | 874 | Femi OGUNODE |
QAT
|
45.41 q SB | 0.187 |
| 5 | 1106 | Greg Nixon |
USA
|
45.51 | 0.232 |
| 6 | 934 | Pavel Trenikhin |
RUS
|
45.68 | 0.230 |
| 7 | 160 | Demetrius Pinder |
BAH
|
45.87 | 0.141 |
| 8 | 896 | Oscar Pistorius |
RSA
|
46.19 | 0.294 |