| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 501 | Hamdan Odha Al-Bishi |  KSA | 46.63 Q | 0.163 | 
| 2 | 404 | Gordon Kennedy |  IRL | 46.94 Q | 0.209 | 
| 3 | 852 | Jonathan Palma |  VEN | 47.27 q | 0.274 | 
| 4 | 30 | Mark Ormrod |  AUS | 47.66 | 0.202 | 
| 5 | 328 | Richard Petzold |  GER | 48.96 | 0.188 | 
| 6 | 378 | David Neilsen |  GUM | 49.99 | 0.231 | 
| 7 | 743 | Melville Rogers |  SKN | 51.18 | 0.225 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 436 | Brandon Simpson |  JAM | 46.64 Q | 0.167 | 
| 2 | 327 | Bastian Swillims |  GER | 47.06 Q PB | 0.201 | 
| 3 | 210 | David Melo |  ESP | 47.96 | 0.162 | 
| 4 | 198 | Marcelo Figueroa |  ESA | 47.99 NJR | 0.179 | 
| 5 | 62 | Alexis Roberts |  BAH | 49.02 | 0.186 | 
| 6 | 789 | Yuan-Kai Liu |  TPE | 49.06 | 0.219 | 
| 483 | Japheth Ogamba |  KEN | DQ | 0.243 | |
| 71 | Khalid Al Haber |  BRN | DNS | 0.000 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 791 | Damion Barry |  TTO | 46.62 Q | 0.178 | 
| 2 | 708 | Tshepo Thobelangope |  RSA | 46.81 Q | 0.162 | 
| 3 | 534 | Bruno Ediarimalala |  MAD | 46.83 q NJR | 0.150 | 
| 4 | 265 | Urel Lacroix |  FRA | 47.34 | 0.185 | 
| 5 | 718 | Dmitriy Petrov |  RUS | 47.66 | 0.145 | 
| 6 | 658 | Jesus Torres |  PUR | 48.58 | 0.179 | 
| 7 | 11 | Khalid Brooks |  AIA | 53.09 | 0.189 | 
| 385 | Sándor Gombos |  HUN | DQ | 0.189 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 847 | William Hernández |  VEN | 46.52 Q | 0.185 | 
| 2 | 638 | Rafal Wieruszewski |  POL | 46.64 Q | 0.344 | 
| 3 | 805 | Volodymyr Demchenko |  UKR | 47.10 q | 0.142 | 
| 4 | 31 | Cameron Brown |  AUS | 47.36 | 0.175 | 
| 5 | 687 | Florin Suciu |  ROU | 47.44 PB | 0.212 | 
| 6 | 745 | Nathan Justin |  LCA | 49.66 | 0.175 | 
| 7 | 594 | Shane Ogumoro |  NMI | 56.72 | 0.238 | 
| 547 | Muhamad Zaiful Zainal Abidin |  MAS | DNS | 0.000 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 456 | Shinji Itabashi |  JPN | 47.37 Q | 0.198 | 
| 2 | 829 | James Graham |  USA | 48.06 Q | 0.163 | 
| 3 | 127 | Sebastián MartÃnez |  CHI | 48.21 | 0.195 | 
| 4 | 604 | Sam Higgie |  NZL | 48.31 | 0.177 | 
| 5 | 112 | David Hamil |  CAY | 49.97 | 0.173 | 
| 6 | 376 | Lucien Kramar |  GUI | 52.94 | 0.144 | 
| 590 | Enefiok Udo-Obong |  NGR | DNS | 0.000 | 
| POS | BIB | ATHLETE | COUNTRY | MARK | Reaction Time | 
|---|---|---|---|---|---|
| 1 | 455 | Shinji Ishikawa |  JPN | 46.53 Q | 0.179 | 
| 2 | 706 | Richard Sharp |  RSA | 46.84 Q | 0.142 | 
| 3 | 795 | Sherridan Kirk |  TTO | 47.06 q | 0.404 | 
| 4 | 540 | Abdellatif El Ghazaoui |  MAR | 48.35 | 0.201 | 
| 5 | 510 | Hamed Hamdan AlBishi |  KSA | 48.40 | 0.199 | 
| 6 | 836 | Elton Spain |  USA | 50.03 | 0.299 | 
| 7 | 382 | King Kit Ku |  HKG | 51.92 | 0.353 |