| Final 21:10 | time | L | | 1. Stephane Diagana | FRA | 47.70s | 6 | | 2. Llewellyn Herbert | RSA | 47.86s | 1 | | 3. Bryan Bronson | USA | 47.88s | 3 | | 4. Fabrizio Mori | ITA | 48.05s | 4 | | 5. Samuel Matete | ZAM | 48.11s | 8 | | 6. Ruslan Mashchenko | RUS | 48.62s | 5 | | 7. Dinsdale Morgan | JAM | 49.06s | 7 | | 8. Jiri Muzik | CZE | 49.51s | 2 |
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| Heat 1 21.05h | time | L | | 1. Stephane Diagana | FRA | 48.14s | 6 | | 2. Llewellyn Herbert | RSA | 48.31s | 5 | | 3. Samuel Matete | ZAM | 48.44s | 4 | | 4. Mubarak Faraj Al Nubi | QAT | 48.84s | 8 | | 5. Joey Woody | USA | 49.14s | 3 | | 6. Ian Weakley | JAM | 49.98s | 2 | | 7. Mustapha Sdad | MAR | 50.78s | 1 | | -. Kazuhiko Yamazaki | JPN | DNF | 7 |
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| Heat 2 21.13h | time | L | | 1. Ruslan Mashchenko | RUS | 48.54s | 5 | | 2. Dinsdale Morgan | JAM | 48.56s | 8 | | 3. Shunji Karube | JPN | 48.81s | 4 | | 4. Pawel Januszewski | POL | 48.94s | 2 | | 5. Derrick Adkins | USA | 48.95s | 3 | | 6. Lukas Soucek | CZE | 49.09s | 6 | | 7. Hamed Ziad Abou | AUS | 49.12s | 7 | | 8. Ashraf Saber | ITA | 49.36s | 1 |
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| Heat 3 21.21h | time | L | | 1. Bryan Bronson | USA | 47.83s | 4 | | 2. Fabrizio Mori | ITA | 48.17s | 5 | | 3. Jiri Muzik | CZE | 48.27s | 6 | | 4. Dusan Kovacs | HUN | 48.45s | 3 | | 5. Ken Harnden | ZIM | 48.82s | 8 | | 6. Yoshihiko Saito | JPN | 49.60s | 1 | | 7. Vadim Zadoynov | MOL | 50.07s | 2 | | 8. Kareem Archer | JAM | 50.76s | 7 |
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| Heat 1 18.00h | time | L | | 1. Llewellyn Herbert | RSA | 49.23s | 4 | | 2. Mubarak Faraj Al Nubi | QAT | 49.39s | 1 | | 3. Ian Weakley | JAM | 49.52s | 2 | | 4. Marc Dollendorf | BEL | 49.66s | 6 | | 5. Tom McGuirk | IRL | 49.93s | 7 | | 6. Niklas Eriksson | SWE | 50.25s | 3 | | 7. Sinisa Pesa | YUG | 50.65s | 5 |
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| Heat 2 18.05h | time | L | | 1. Fabrizio Mori | ITA | 48.93s | 1 | | 2. Lukas Soucek | CZE | 49.08s | 5 | | 3. Yoshihiko Saito | JPN | 49.52s | 6 | | 4. Jean-Paul Bruwier | BEL | 49.56s | 7 | | 5. Gary Jennings | GBR | 49.84s | 2 | | 6. Vladislav Shiryayev | RUS | 49.95s | 3 | | 7. Hubert Rakotombelontsoa | MAD | 52.29s | 4 |
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| Heat 3 18.10h | time | L | | 1. Samuel Matete | ZAM | 48.43s | 8 | | 2. Jiri Muzik | CZE | 48.56s | 5 | | 3. Dinsdale Morgan | JAM | 49.34s | 2 | | 4. Mustapha Sdad | MAR | 49.50s | 4 | | 5. Chris Rawlinson | GBR | 49.72s | 6 | | 6. Nabil Selmi | ALG | 50.45s | 3 | | 7. Abdullah Sabt Ghulum | UAE | 51.51s | 1 | | 7. Rikke Ronholf | DEN | 57.26s | 7 | | -. Ibou Faye | SEN | DNS | 7 |
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| Heat 4 18.15h | time | L | | 1. Shunji Karube | JPN | 48.63s | 1 | | 2. Joey Woody | USA | 48.89s | 3 | | 3. Kareem Archer | JAM | 49.11s | 4 | | 4. Hamed Ziad Abou | AUS | 49.21s | 7 | | 5. Pawel Januszewski | POL | 49.29s | 2 | | 6. Willie Smith | NAM | 51.12s | 6 | | 7. Domingo Cordero | PUR | 52.26s | 5 |
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| Heat 5 18.20h | time | L | | 1. Ruslan Mashchenko | RUS | 48.93s | 1 | | 2. Derrick Adkins | USA | 49.23s | 6 | | 3. Vadim Zadoynov | MOL | 49.49s | 7 | | 4. Laurent Ottoz | ITA | 49.69s | 5 | | 5. Egils Tebelis | LAT | 50.42s | 2 | | -. Miro Kocuvan | SLO | DNF | 4 | | -. Pascal Maran | FRA | DQ | 3 |
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| Heat 6 18.25h | time | L | | 1. Stephane Diagana | FRA | 49.34s | 2 | | 2. Ken Harnden | ZIM | 49.42s | 1 | | 3. Kazuhiko Yamazaki | JPN | 49.47s | 7 | | 4. Octavius Terry | USA | 49.84s | 8 | | 5. Kenneth Enyiazu | NGR | 50.12s | 5 | | 6. Cleverson Oliveira Da Silva | BRA | 50.63s | 3 | | 7. El Hefeny Ibrahim | EGY | 50.70s | 6 | | -. Ilir Xhani | ALB | DNF | 4 |
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| Heat 7 18.30h | time | L | | 1. Bryan Bronson | USA | 48.84s | 7 | | 2. Dusan Kovacs | HUN | 48.99s | 5 | | 3. Ashraf Saber | ITA | 49.11s | 1 | | 4. Jimmy Coco | FRA | 49.64s | 4 | | 5. Carlos Zbinden | CHI | 50.42s | 6 | | 6. Rohan Robinson | AUS | 51.67s | 3 | | 7. Lambros Zervakos | GRE | 52.94s | 2 |
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