2018 Estoril Open – Singles
| Singles | |
|---|---|
| 2018 Estoril Open | |
| Champion | João Sousa |
| Runner-up | Frances Tiafoe |
| Score | 6–4, 6–4 |
| Draw | 28 (4 Q / 3 WC ) |
| Seeds | 8 |
Pablo Carreño Busta was the defending champion, but lost in the semifinals to Frances Tiafoe.
João Sousa won the title, defeating Tiafoe in the final, 6–4, 6–4.