2011 Slovak Open – Men's singles
# 2011 Slovak Open – Men's singles

Martin Kližan was the defending champion but decided not to participate.

Lukáš Lacko won the title defeating Ričardas Berankis in the final $7–6^{(9–7)},$ 6–2.

## Seeds

* Łukasz Kubot (first round)
* Sergiy Stakhovsky (quarterfinals)
* Denis Istomin (first round)
* Lukáš Rosol (semifinals)
* Matthew Ebden (second round)
* Adrian Mannarino (quarterfinals)
* Michael Berrer (quarterfinals)
* Stéphane Robert (second 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 | Semifinals | Final | Final | Final |
| - | - | - | - | - | - | - | - |
| | Lukáš Lacko | 4 | 7 | 6 | | | |
| | Frank Dancevic | 6 | 5 | 0 | | | |
| | Frank Dancevic | 6 | 5 | 0 | Lukáš Lacko | $7^9$ | 6 |
| | | | | | Ričardas Berankis | $6^7$ | 2 |
| 4 | Lukáš Rosol | 6 | 0 | $6^2$ | Ričardas Berankis | $6^7$ | 2 |
| | Ričardas Berankis | 3 | 6 | $7^7$ | | | |

### 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 | Ł Kubot | 1 | 1 | | | | | | | | | | | | | | | |
| | L Lacko | 6 | 6 | | | L Lacko | $7^7$ | 6 | | | | | | | | | | |
| | K de Schepper | 3 | 2 | | | J Hájek | $6^4$ | 2 | | | | | | | | | | |
| | J Hájek | 6 | 6 | | | | | | | | L Lacko | $6^5$ | $7^7$ | 6 | | | | |
| Q | A Pavić | 6 | 6 | | | | | | | 7 | M Berrer | $7^7$ | $6^5$ | 4 | | | | |
| SE | P Torebko | 3 | 3 | | Q | A Pavić | 6 | 4 | 2 | | | | | | | | | |
| | I Andreev | 4 | $7^7$ | 2 | 7 | M Berrer | 4 | 6 | 6 | | | | | | | | | |
| 7 | M Berrer | 6 | $6^5$ | 6 | | | | | | | | | | | L Lacko | 4 | 7 | 6 |
| 3 | D Istomin | $6^3$ | 6 | 3 | | | | | | | | | | | F Dancevic | 6 | 5 | 0 |
| | M Jaziri | $7^7$ | 4 | 6 | | M Jaziri | 3 | 4 | | | | | | | | | | |
| Q | J Minář | 6 | 6 | | Q | J Minář | 6 | 6 | | | | | | | | | | |
| WC | A Martin | 4 | 4 | | | | | | | Q | J Minář | 5 | 2 | | | | | |
| | F Dancevic | 6 | 6 | | | | | | | | F Dancevic | 7 | 6 | | | | | |
| WC | J Veselý | 4 | 0 | | | F Dancevic | $6^4$ | $7^7$ | 6 | | | | | | | | | |
| | M Przysiężny | 1 | $6^6$ | | 5 | M Ebden | $7^7$ | $6^5$ | 4 | | | | | | | | | |
| 5 | M Ebden | 6 | $7^8$ | | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 6 | A Mannarino | 6 | 6 | | | | | | | | | | | | | | | | |
| SE | J Hernych | 1 | 2 | | 6 | A Mannarino | 7 | 6 | | | | | | | | | | | |
| WC | J Kovalík | $7^7$ | 5 | 3 | | H Zeballos | 5 | 0 | | | | | | | | | | | |
| | H Zeballos | $6^4$ | 7 | 6 | | | | | | 6 | A Mannarino | 3 | $6^4$ | | | | | | |
| | A Kudryavtsev | 3 | 6 | 1 | | | | | | 4 | L Rosol | 6 | $7^7$ | | | | | | |
| | J Zopp | 6 | 3 | 6 | | J Zopp | 3 | $6^4$ | | | | | | | | | | | |
| | M İlhan | 2 | $6^3$ | | 4 | L Rosol | 6 | $7^7$ | | | | | | | | | | | |
| 4 | L Rosol | 6 | $7^7$ | | | | | | | | | | | | 4 | L Rosol | 6 | 0 | $6^2$ |
| 8 | S Robert | 6 | $7^7$ | | | | | | | | | | | | | R Berankis | 3 | 6 | $7^7$ |
| WC | F Horanský | 2 | $6^5$ | | 8 | S Robert | 6 | 4 | $6^4$ | | | | | | | | | | |
| | A Ungur | $6^5$ | 3 | | | R Berankis | 2 | 6 | $7^7$ | | | | | | | | | | |
| | R Berankis | $7^7$ | 6 | | | | | | | | R Berankis | $6^6$ | 6 | 6 | | | | | |
| Q | B Pašanski | 1 | 1 | | | | | | | 2 | S Stakhovsky | $7^8$ | 3 | 2 | | | | | |
| | M Teixeira | 6 | 6 | | | M Teixeira | 1 | 3 | | | | | | | | | | | |
| Q | K Čapkovič | $6^4$ | 5 | | 2 | S Stakhovsky | 6 | 6 | | | | | | | | | | | |
| 2 | S Stakhovsky | $7^7$ | 7 | | | | | | | | | | | | | | | | |
