First of all we have to wait to 19:45 london time semifinals results
| Semifinal 1 | |
| Country | Athlete |
| Netherlands | Churandy Martina |
| Gambia | Suwaibou Sanneh |
| Jamaica | Asafa Powell |
| France | Jimmy Vicaut |
| Côte d’Ivoire | Ben Youssef Meite |
| United States of America | Justin Gatlin |
| Trinidad and Tobago | Keston Bledman |
| Great Britain | James Dasaolu |
| Semifinal 2 | |
| Country | Athlete |
| Saint Kitts and Nevis | Antoine Adams |
| People’s Republic of China | Bingtian Su |
| Jamaica | Usain Bolt |
| Great Britain | Dwain Chambers |
| Antigua and Barbuda | Daniel Bailey |
| United States of America | Ryan Bailey |
| Trinidad and Tobago | Richard Thompson |
| Zambia | Gerald Phiri |
| Semifinal 3 | |
| Country | Athlete |
| Cayman Islands | Kemar Hyman |
| Trinidad and Tobago | Rondel Sorrillo |
| United States of America | Tyson Gay |
| Japan | Ryota Yamagata |
| Jamaica | Yohan Blake |
| Great Britain | Adam Gemili |
| Bahamas | Derrick Atkins |
| Canada | Justyn Warner |
What's going on 