2017 Croatia Open Umag – Singles


was the defending champion, but lost in the quarterfinals to Andrey Rublev.
Rublev went to win his first ATP World Tour title, defeating Paolo Lorenzi in the final, 6–4, 6–2.

Seeds

The top four seeds receive a bye into the second round.

Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Lucky losers

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier