| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Alvin Harrison |
USA
|
44.53 Q | |
| 2 | Michael Johnson |
USA
|
44.65 Q | |
| 3 | Gregory Haughton |
JAM
|
44.93 Q | |
| 4 | Sanderlei Parrela |
BRA
|
45.17 Q | |
| 5 | Avard Moncur |
BAH
|
45.18 | |
| 6 | Piotr Haczek |
POL
|
45.66 | |
| 7 | Patrick Dwyer |
AUS
|
45.70 | |
| 8 | Hamdan Odha Al-Bishi |
KSA
|
45.98 |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Danny McFarlane |
JAM
|
45.38 Q | |
| 2 | Hendrick Mokganyetsi |
RSA
|
45.52 Q | |
| 3 | Robert Mackowiak |
POL
|
45.53 Q | |
| 4 | Daniel Caines |
GBR
|
45.55 | |
| 5 | Casey Vincent |
AUS
|
45.61 | |
| 6 | Alessandro Attene |
ITA
|
46.41 | |
| Antonio Pettigrew |
USA
|
DQ | ||
| Davian Clarke |
JAM
|
DNF |