| 1 | A | B | C | D | E | F | G |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | Athletics at the 2012 Summer Olympics – Men's 100 metres - Semifinal 1 |  |  |  |  |  |  |
| 3 | Rank | Lane | Name | Nationality | Reaction | Result | Notes |
| 4 | 1 | 7 | Justin Gatlin | United States | 0.187 | 9.82 | Q |
| 5 | 2 | 2 | Churandy Martina | Netherlands | 0.148 | 9.91 | Q, NR |
| 6 | 3 | 4 | Asafa Powell | Jamaica | 0.155 | 9.94 | q |
| 7 | 4 | 8 | Keston Bledman | Trinidad and Tobago | 0.175 | 10.04 | - |
| 8 | 5 | 6 | Ben Youssef Meïté | Ivory Coast | 0.163 | 10.13 | - |
| 9 | 6 | 5 | Jimmy Vicaut | France | 0.203 | 10.16 | - |
| 10 | 7 | 9 | James Dasaolu | Great Britain | 0.174 | 10.18 | - |
| 11 | 8 | 3 | Suwaibou Sanneh | The Gambia | 0.175 | 10.18 | NR |
| 12 | - | - | - | - | Wind: +0.7 m/s | Wind: +0.7 m/s | Wind: +0.7 m/s |

Question: Who ran the fastest in the Men's 100 metres in the first semi final of the 2012 Summer olympics? 
Answer: In the first semi-final of 2012 Summer Olympics – Men's 100 metres, Justin Gatlin ran the fastest in 9.82, ahead of Churandy Martina 9.91 and Asafa Powell in 9.94.