| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Quincy Watts |
USA
|
44.63 Q | |
| 2 | Harry Reynolds |
USA
|
44.82 Q | |
| 3 | Simon Kemboi |
KEN
|
44.94 Q | |
| 4 | Kennedy Ochieng |
KEN
|
45.01 Q | |
| 5 | Evon Clarke |
JAM
|
45.19 | |
| 6 | Norberto Téllez |
CUB
|
46.17 | |
| 7 | Du'aine Ladejo |
GBR
|
46.33 | |
| Ian Morris |
TTO
|
DNS |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Samson Kitur |
KEN
|
44.34 Q | |
| 2 | Michael Johnson |
USA
|
44.39 Q | |
| 3 | Sunday Bada |
NGR
|
44.63 Q | |
| 4 | Gregory Haughton |
JAM
|
44.78 Q | |
| 5 | Ibrahim Ismail Muftah |
QAT
|
44.85 | |
| 6 | Solomon Amegatcher |
GHA
|
45.58 | |
| 7 | Neil de Silva |
TTO
|
45.66 | |
| 8 | Rico Lieder |
GER
|
45.75 |