# 2013 Košice Open – Singles

Aljaž Bedene was the defending champion but chose to compete in the 2013 Aegon Championships instead. Mikhail Kukushkin won the title defeating Damir Džumhur in the final, 6–4, 1–6, 6–2.

## Seeds

* Jan Hájek (first round)
* Adrian Ungur (first round)
* João Sousa (second round)
* Teymuraz Gabashvili (first round)
* Malek Jaziri (first round)
* Andrej Martin (quarterfinals)
* Ivan Sergeyev (first round)
* Antonio Veić (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 | Semifinals | Final | Final | Final | Final | Final |
| | Radu Albot | 6 | 2 | 4 | | | | | |
| Q | Damir Džumhur | 1 | 6 | 6 | | | | | |
| Q | Damir Džumhur | 1 | 6 | 6 | Q | Damir Džumhur | 4 | 6 | 2 |
| | | | | | | Mikhail Kukushkin | 6 | 1 | 6 |
| | Mikhail Kukushkin | 6 | 2 | | | Mikhail Kukushkin | 6 | 1 | 6 |
| | André Ghem | 2 | 1$^r$ | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Hájek | 2 | 4 | | | | | | | | | | | | | | | |
| | H Laaksonen | 6 | 6 | | | H Laaksonen | 2 | 3 | | | | | | | | | | |
| | R Albot | 6 | 6 | | | R Albot | 6 | 6 | | | | | | | | | | |
| WC | Marco Daniš | 2 | 1 | | | | | | | | R Albot | 6 | 6 | | | | | |
| Q | C Gómez-Herrera | 7 | 6 | | | | | | | 6 | A Martin | 1 | 4 | | | | | |
| Q | V Uzhylovskyi | 5 | 0 | | Q | C Gómez-Herrera | 7$^7$ | 2 | 4 | | | | | | | | | |
| | P Starace | 2 | 0$^r$ | | 6 | A Martin | 6$^4$ | 6 | 6 | | | | | | | | | |
| 6 | A Martin | 6 | 3 | | | | | | | | | | | | R Albot | 6 | 2 | 4 |
| 3 | J Sousa | 6 | 6 | | | | | | | | | | | Q | D Džumhur | 1 | 6 | 6 |
| | F de Paula | 2 | 0 | | 3 | J Sousa | 0 | 4 | | | | | | | | | | |
| | T Sandgren | 2 | 2 | | Q | D Džumhur | 6 | 6 | | | | | | | | | | |
| Q | D Džumhur | 6 | 6 | | | | | | | Q | D Džumhur | 6 | 6 | | | | | |
| | M Semjan | 4 | 6 | 3 | | | | | | | JC Campozano | 4 | 1 | | | | | |
| | D Meffert | 6 | 4 | 6 | | D Meffert | 6 | 4 | | | | | | | | | | |
| | JC Campozano | 6 | 6 | | | JC Campozano | 4 | 6 | 6 | | | | | | | | | |
| 7 | I Sergeyev | 1 | 1 | | | | | | | | | | | | | | | |

### 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 |
| 8 | A Veić | 7$^{10}$ | 6 | | | | | | | | | | | | | | |
| WC | A Pavalásek | 6$^8$ | 3 | | 8 | A Veić | 2 | 6 | 6 | | | | | | | | |
| | V Crivoi | 5 | 4 | | | G Melzer | 6 | 3 | 1 | | | | | | | | |
| | G Melzer | 7 | 6 | | | | | | | 8 | A Veić | 2 | 4 | | | | |
| | A Giannessi | 4 | 4 | | | | | | | | M Kukushkin | 6 | 6 | | | | |
| | G Clezar | 6 | 6 | | | G Clezar | 0 | 2 | | | | | | | | | |
| | M Kukushkin | 3 | 6 | 7$^7$ | | M Kukushkin | 6 | 6 | | | | | | | | | |
| 4 | T Gabashvili | 6 | 3 | 6$^5$ | | | | | | | | | | | M Kukushkin | 6 | 2 |
| 5 | M Jaziri | 1 | 0$^r$ | | | | | | | | | | | | A Ghem | 2 | 1$^r$ |
| WC | M Mečíř Jr. | 6 | 3 | | WC | M Mečíř Jr. | 6 | 6 | | | | | | | | | |
| | H Podlipnik Castillo | 6 | 3 | 3 | | A Šetkić | 4 | 4 | | | | | | | | | |
| | A Šetkić | 4 | 6 | 6 | | | | | | WC | M Mečíř Jr. | 2 | 6 | 5 | | | |
| Q | M Neuchrist | 6 | 6 | | | | | | | | A Ghem | 6 | 3 | 7 | | | |
| WC | D Djokovic | 2 | 1 | | Q | M Neuchrist | 5 | 1 | | | | | | | | | |
| | A Ghem | 6 | 2 | 6 | | A Ghem | 7 | 6 | | | | | | | | | |
| 2 | A Ungur | 1 | 6 | 1 | | | | | | | | | | | | | |