# 2011 ATP Studena Croatia Open – Singles

Alexandr Dolgopolov won the title, defeating Marin Čilić in the final, 6–4, 3–6, 6–3.
Juan Carlos Ferrero was the defending champion, but lost fo Dolgopolov in the semifinals.

## Seeds

The first four seeds received a bye into the second round.
* Juan Ignacio Chela (second round)
* Alexandr Dolgopolov (champion)
* Ivan Ljubičić (second round)
* Marin Čilić (final)
* Tommy Robredo (second round, withdrew due to left calf injury)
* Fabio Fognini (semifinals)
* Andreas Seppi (quarterfinals)
* Ivan Dodig (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 6 | Fabio Fognini | 2 | 2 | | | | | |
| 4 | Marin Čilić | 6 | 6 | | | | | |
| 4 | Marin Čilić | 6 | 6 | 4 | Marin Čilić | 4 | 6 | 3 |
| | | | | 2 | Alexandr Dolgopolov | 6 | 3 | 6 |
| | Juan Carlos Ferrero | 4 | 4 | 2 | Alexandr Dolgopolov | 6 | 3 | 6 |
| 2 | Alexandr Dolgopolov | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | JI Chela | 4 | 6 | 5 | | | | | | | | | |
| | P Starace | 6$^5$ | 6 | 6 | | P Starace | 6 | 4 | 7 | | | | | | | | | |
| | T de Bakker | 7$^7$ | 2 | 1 | | | | | | | P Starace | 6 | 3 | 1 | | | | |
| | S Stakhovsky | 4 | 4 | | | | | | | 6 | F Fognini | 3 | 6 | 6 | | | | |
| | O Rochus | 6 | 6 | | | O Rochus | 4 | 1 | | | | | | | | | | |
| | R Machado | 4 | 3 | | 6 | F Fognini | 6 | 6 | | | | | | | | | | |
| 6 | F Fognini | 6 | 6 | | | | | | | | | | | | 6 | F Fognini | 2 | 2 |
| | | | | | | | | | | | | | | | 4 | M Čilić | 6 | 6 |
| | | | | | 4 | M Čilić | 4 | 6 | 6 | | | | | | | | | |
| Q | S Vagnozzi | 6 | 3 | 1 | | R Haase | 6 | 4 | 3 | | | | | | | | | |
| | R Haase | 3 | 6 | 6 | | | | | | 4 | M Čilić | 6 | 6 | | | | | |
| WC | A Veić | 4 | 5 | | | | | | | 7 | A Seppi | 1 | 3 | | | | | |
| | D Junqueira | 6 | 7 | | | D Junqueira | 5 | 1 | | | | | | | | | | |
| Q | D Lajović | 4 | 2 | | 7 | A Seppi | 7 | 6 | | | | | | | | | | |
| 7 | A Seppi | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | T Robredo | 6 | 6 | | | | | | | | | | | | | | |
| Q | R Ramírez Hidalgo | 3 | 2 | | 5 | T Robredo | | | | | | | | | | | |
| | B Kavčič | 4 | 7$^9$ | 4 | | C Berlocq | w/o | | | | | | | | | | |
| | C Berlocq | 6 | 6$^7$ | 6 | | | | | | | C Berlocq | 1 | 6$^5$ | | | | |
| | JC Ferrero | 3 | 6 | 1 | | | | | | | JC Ferrero | 6 | 7$^7$ | | | | |
| | M González | 6 | 3 | 1$^r$ | | JC Ferrero | 1 | 6 | 6 | | | | | | | | |
| | | | | | 3 | I Ljubičić | 6 | 3 | 4 | | | | | | | | |
| | | | | | | | | | | | | | | | JC Ferrero | 4 | 4 |
| 8 | I Dodig | 4 | 6 | 2 | | | | | | | | | | 2 | A Dolgopolov | 6 | 6 |
| | A Ramos | 6 | 3 | 6 | | A Ramos | 6 | 6 | | | | | | | | | |
| Q | G Naso | 6 | 6 | | Q | G Naso | 1 | 3 | | | | | | | | | |
| WC | M Delić | 4 | 2 | | | | | | | | A Ramos | 3 | 5 | | | | |
| WC | M Pavić | 4 | 0 | | | | | | | 2 | A Dolgopolov | 6 | 7 | | | | |
| | F Volandri | 6 | 6 | | | F Volandri | 1 | 2 | | | | | | | | | |
| | | | | | 2 | A Dolgopolov | 6 | 6 | | | | | | | | | |