# 2011 Banja Luka Challenger – Singles

Marsel İlhan was the defending champion but decided not to participate.
2nd seed Blaž Kavčič claimed the title, defeating 1st seed Pere Riba 6–4, 6–1 in the final.

## Seeds

* Pere Riba (final)
* Blaž Kavčič (champion)
* Daniel Gimeno-Traver (semifinals)
* Flavio Cipolla (second round)
* Grega Žemlja (first round)
* Jaroslav Pospíšil (first round)
* Rubén Ramírez Hidalgo (second round)
* Pablo Carreño-Busta (quarterfinals)

## 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 |
| 1 | Pere Riba | 7$^7$ | 6 | | | | |
| 3 | Daniel Gimeno-Traver | 6$^4$ | 0 | | | | |
| 3 | Daniel Gimeno-Traver | 6$^4$ | 0 | 1 | Pere Riba | 4 | 1 |
| | | | | 2 | Blaž Kavčič | 6 | 6 |
| | Simone Vagnozzi | 4 | 5 | 2 | Blaž Kavčič | 6 | 6 |
| 2 | Blaž Kavčič | 6 | 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 | P Riba | 6 | 4 | | | | | | | | | | | | | | | |
| | D Lojda | 4 | 0$^r$ | | 1 | P Riba | 6 | 6 | | | | | | | | | | |
| | I Klec | 7 | 1 | 6 | | I Klec | 2 | 2 | | | | | | | | | | |
| | F Romboli | 5 | 6 | 4 | | | | | | 1 | P Riba | 6 | 6 | | | | | |
| | J Dasnières de Veigy | 1 | 1 | | | | | | | WC | M Bašić | 1 | 3 | | | | | |
| WC | M Bašić | 6 | 6 | | WC | M Bašić | 4 | 6 | 6 | | | | | | | | | |
| Q | N Čačić | 6 | 6 | | Q | N Čačić | 6 | 3 | 3 | | | | | | | | | |
| 6 | J Pospíšil | 4 | 1 | | | | | | | | | | | | 1 | P Riba | 7$^7$ | 6 |
| 3 | D Gimeno-Traver | 6 | 6 | | | | | | | | | | | | 3 | D Gimeno-Traver | 6$^4$ | 0 |
| Q | T Androić | 4 | 2 | | 3 | D Gimeno-Traver | 7 | 6 | | | | | | | | | | |
| | J Mertl | 6 | 6 | | | J Mertl | 5 | 2 | | | | | | | | | | |
| WC | G Tošić | 4 | 0 | | | | | | | 3 | D Gimeno-Traver | 4 | 6 | 6 | | | | |
| | M Teixeira | 3 | 0 | | | | | | | 8 | P Carreño-Busta | 6 | 3 | 4 | | | | |
| Q | D Marcan | 6 | 6 | | Q | D Marcan | 1 | 2 | | | | | | | | | | |
| | F Dancevic | 3 | 6$^4$ | | 8 | P Carreño-Busta | 6 | 6 | | | | | | | | | | |
| 8 | P Carreño-Busta | 6 | 7$^7$ | | | | | | | | | | | | | | | |

### 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 | G Žemlja | 6 | 4 | 6$^4$ | | | | | | | | | | | | | |
| | I Navarro | 3 | 6 | 7$^7$ | | I Navarro | 2 | 3 | | | | | | | | | |
| | S Vagnozzi | 6 | 6 | | | S Vagnozzi | 6 | 6 | | | | | | | | | |
| | K Čapkovič | 3 | 2 | | | | | | | | S Vagnozzi | 6 | 6 | | | | |
| | G Alcaide | 6 | 4 | 1 | | | | | | Q | A Pavić | 3 | 1 | | | | |
| Q | Ante Pavić | 4 | 6 | 6 | Q | A Pavić | 6 | 3 | 7 | | | | | | | | |
| | B Pašanski | 3 | 2 | | 4 | F Cipolla | 4 | 6 | 5 | | | | | | | | |
| 4 | F Cipolla | 6 | 6 | | | | | | | | | | | | S Vagnozzi | 4 | 5 |
| 7 | R Ramírez Hidalgo | 6 | 6 | | | | | | | | | | | 2 | B Kavčič | 6 | 7 |
| | M Crugnola | 3 | 0 | | 7 | R Ramírez Hidalgo | 6 | 6$^1$ | 3 | | | | | | | | |
| WC | Ivan Bjelica | 1 | 1 | | | A Bedene | 1 | 7$^7$ | 6 | | | | | | | | |
| | A Bedene | 6 | 6 | | | | | | | | A Bedene | 4 | 6$^4$ | | | | |
| | M Viola | 3 | 1 | | | | | | | 2 | B Kavčič | 6 | 7$^7$ | | | | |
| | M Middelkoop | 6 | 6 | | | M Middelkoop | 7$^8$ | 1 | 4 | | | | | | | | |
| WC | T Brkić | 7$^7$ | 4 | 1 | 2 | B Kavčič | 6$^6$ | 6 | 6 | | | | | | | | |
| 2 | B Kavčič | 6$^3$ | 6 | 6 | | | | | | | | | | | | | |