Athletics at the 2012 Summer Games: Previous Summer Games
Host City: London, Great Britain
Venue(s): Olympic Stadium, Olympic Park, Stratford, London
Date Started: August 4, 2012
Date Finished: August 4, 2012
Format: Top two in each heat and next two fastest advanced to the final.
| Gold: | Félix Sánchez |
| Silver: | Michael Tinsley |
| Bronze: | Javier Culson |
| Rank | Athlete | Age | Team | NOC | T(A) | RT | |
|---|---|---|---|---|---|---|---|
| 1 | Félix Sánchez | 34 | Dominican Republic | DOM | 47.76 | 0.175 | Q |
| 2 | Jehue Gordon | 20 | Trinidad and Tobago | TTO | 47.96 | 0.148 | Q |
| 3 | Kerron Clement | 26 | United States | USA | 48.12 | 0.251 | q |
| 4 | Dai Greene | 26 | Great Britain | GBR | 48.19 | 0.181 | q |
| 5 | Mamadou Kasse Hanne | 25 | Senegal | SEN | 48.80 | 0.172 | |
| 6 | Michael Bultheel | 26 | Belgium | BEL | 49.10 | 0.147 | |
| 7 | Eric Alejandro | 26 | Puerto Rico | PUR | 49.15 | 0.186 | |
| 8 | Kurt Couto | 27 | Mozambique | MOZ | 51.55 | 0.179 |
| Rank | Athlete | Age | Team | NOC | T(A) | RT | |
|---|---|---|---|---|---|---|---|
| 1 | Javier Culson | 28 | Puerto Rico | PUR | 47.93 | 0.224 | Q |
| 2 | Angelo Taylor | 33 | United States | USA | 47.95 | 0.165 | Q |
| 3 | Omar Cisneros | 22 | Cuba | CUB | 48.23 | 0.239 | |
| 4 | Emir Bekrić | 21 | Serbia | SRB | 49.62 | 0.204 | |
| 5 | Kenneth Medwood | 24 | Belize | BIZ | 49.87 | 0.175 | |
| 6 | Stanislav Melnykov | 25 | Ukraine | UKR | 50.19 | 0.182 | |
| 7 | Tristan Thomas | 26 | Australia | AUS | 50.55 | 0.164 | |
| AC | Jack Green | 20 | Great Britain | GBR | 0.194 | DNF |
| Rank | Athlete | Age | Team | NOC | T(A) | RT | |
|---|---|---|---|---|---|---|---|
| 1 | Michael Tinsley | 28 | United States | USA | 48.18 | 0.179 | Q |
| 2 | Leford Green | 25 | Jamaica | JAM | 48.61 | 0.176 | Q |
| 3 | Brent Larue | 25 | Slovenia | SLO | 49.45 | 0.172 | |
| 4 | Rhys Williams | 28 | Great Britain | GBR | 49.63 | 0.190 | |
| 5 | Brendan Cole | 31 | Australia | AUS | 49.65 | 0.178 | |
| 6 | José Reynaldo Bencosme de Leon | 20 | Italy | ITA | 50.07 | 0.205 | |
| 7 | Amaurys Valle | 22 | Cuba | CUB | 50.48 | 0.162 | |
| AC | Amaechi Morton | 22 | Nigeria | NGR | 0.231 | DQ |