| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Derrick Adkins |
USA
|
48.25 Q | |
| 2 | Stéphane Diagana |
FRA
|
48.37 Q | |
| 3 | Ruslan Mashchenko |
RUS
|
48.75 Q | |
| 4 | Eronilde Nunes de Araújo |
BRA
|
48.85 Q | |
| 5 | Erick Keter |
KEN
|
49.53 | |
| 6 | Jose Perez |
CUB
|
50.20 | |
| Fabrizio Mori |
ITA
|
DQ | ||
| Shunji Karube |
JPN
|
DQ |
| POS | ATHLETE | COUNTRY | MARK | Reaction Time |
|---|---|---|---|---|
| 1 | Samuel Matete |
ZAM
|
48.50 Q | |
| 2 | Sven Nylander |
SWE
|
48.53 Q | |
| 3 | Kazuhiko Yamazaki |
JPN
|
48.64 Q | |
| 4 | Ken Harnden |
ZIM
|
48.73 Q | |
| 5 | Laurent Ottoz |
ITA
|
48.94 | |
| 6 | Octavius Terry |
USA
|
49.49 | |
| 7 | Dusán Kovács |
HUN
|
49.57 | |
| Winthrop Graham |
JAM
|
DQ |