| Juan Carlos Ferrero|
| Potito Starace|
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.
2010 ATP Studena Croatia Open Umag – Singles Wikipedia
The top four seeds receive a bye into the second round.