| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 503 | Brandon Simpson |
JAM
|
45.53 Q | 0.194 |
| 2 | 1023 | Andrew Rock |
USA
|
45.78 Q | 0.193 |
| 3 | 34 | John Steffensen |
AUS
|
46.06 q | 0.148 |
| 4 | 206 | Carlos Santa |
DOM
|
46.07 | 0.167 |
| 5 | 420 | Alleyne Francique |
GRN
|
46.59 | 0.185 |
| 6 | 680 | James Godday |
NGR
|
46.62 | 0.204 |
| 7 | 584 | Hamdan Odha Al-Bishi |
KSA
|
46.80 | 0.151 |
| 8 | 455 | Andrea Barberi |
ITA
|
47.10 | 0.154 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 133 | Tyler Christopher |
CAN
|
45.47 Q | 0.142 |
| 2 | 1042 | Darold Williamson |
USA
|
45.65 Q | 0.169 |
| 3 | 341 | Timothy Benjamin |
GBR
|
45.66 q | 0.180 |
| 4 | 203 | Arismendy Peguero |
DOM
|
46.08 | 0.211 |
| 5 | 161 | Gary Kikaya |
COD
|
46.15 | 0.158 |
| 6 | 861 | Nagmeldin Ali Abubakr |
SUD
|
46.67 | 0.157 |
| 7 | 504 | Lansford Spence |
JAM
|
47.20 | 0.250 |
| 928 | Sofiane Labidi |
TUN
|
DNF | 0.166 |
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|---|
| 1 | 1039 | Jeremy Wariner |
USA
|
45.65 Q | 0.138 |
| 2 | 49 | Chris Brown |
BAH
|
45.67 Q | 0.156 |
| 3 | 492 | Michael Blackwood |
JAM
|
46.25 | 0.200 |
| 4 | 356 | Robert Tobin |
GBR
|
46.69 | 0.176 |
| 5 | 869 | Pierre Lavanchy |
SUI
|
47.19 | 0.161 |
| 6 | 1055 | Young Talkmore Nyongani |
ZIM
|
47.20 | 0.165 |
| 7 | 87 | California Molefe |
BOT
|
47.26 | 0.179 |
| 8 | 530 | Mitsuhiro Sato |
JPN
|
48.55 | 0.163 |