Semifinal 1
mardi 7 août 2018, 19h30 GMT – 19h30 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Jimmy Vicaut | FFA - France Athlétisme | 9.97″ |
| 2 |  Reece Prescod | Great Britain | + 0.13″ |
| 3 |  Churandy Martina | Netherlands | + 0.21″ |
| 4 |  Emre Zafer Barnes | Turkey | + 0.24″ |
| 5 |  Dominik Kopec | Poland | + 0.32″ |
| 6 | Carlos Nascimento | Portugal | + 0.34″ |
| 7 | Federico Cattaneo | Italy | + 0.42″ |
| 8 |  Silvan Wicki | Switzerland | + 0.52″ |