2018 Croatia Open Umag
The 2018 Croatia Open Umag was a men's tennis tournament played on outdoor clay courts. It was the 29th edition of the Croatia Open, and part of the ATP World Tour 250 Series of the 2018 ATP World Tour. It took place at the International Tennis Center in Umag, Croatia, from 15 July through 22 July 2018.ATP singles main draw entrants
Seeds
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
;Before the tournament
Seeds
- Rankings are as of July 2, 2018
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
;Before the tournament
Men's singles
- Marco Cecchinato def. Guido Pella, 6–2, 7–6
Men's doubles
- Robin Haase / Matwé Middelkoop def. Roman Jebavý / Jiří Veselý, 6–4, 6–4
