2010 ATP Studena Croatia Open Umag – Singles

Nikolay Davydenko was the champion in 2009. He tried to defend his title, but lost to Juan Ignacio Chela in the quarterfinal.

Juan Carlos Ferrero won in the final over Potito Starace 6–4, 6–4.

Seeds
The top four seeds receive a bye into the second round. • # 🇷🇺 Nikolay Davydenko (quarterfinals)

• # 🇦🇹 Jürgen Melzer (quarterfinals)

• # Ivan Ljubičić (quarterfinals)

• # 🇪🇸 Juan Carlos Ferrero (champion)

• # 🇩🇪 Philipp Petzschner (first round)

• # 🇺🇦 Alexandr Dolgopolov (quarterfinals)

• # 🇺🇦 Sergiy Stakhovsky (first round)

• # 🇦🇷 Juan Ignacio Chela (semifinals)