2017 Estoril Open – Singles
was the defending champion, but lost in the quarterfinals to Pablo Carreño Busta.
Carreño Busta went on to win the title, defeating Gilles Müller in the final, 6–2, 7–6.Seeds
The top four seeds receive a bye into the second round.Draw
Finals
Seeds
Qualifiers
Qualifying draw
Second qualifier
Third qualifier