# 2013 Sibiu Open – Singles

Adrian Ungur was the defending champion, but lost in the semifinals to Jaroslav Pospíšil.
Pospíšil went on to win the title, defeating Marco Cecchinato 4–6, 6–4, 6–1 in the final.

## Seeds

* Filippo Volandri (quarterfinals, retired)
* Jan Hájek (second round)
* Julian Reister (quarterfinals)
* Andreas Haider-Maurer (first round)
* Adrian Ungur (semifinals)
* Dušan Lajović (semifinals)
* Pere Riba (withdrew)
* Marco Cecchinato (final)
* Thomas Schoorel (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 | Final | Final | Final | Final | Final |
| 6 | Dušan Lajović | 4 | 3 | | | | | |
| 8 | Marco Cecchinato | 6 | 6 | | | | | |
| 8 | Marco Cecchinato | 6 | 6 | 8 | Marco Cecchinato | 6 | 4 | 1 |
| | | | | | Jaroslav Pospíšil | 4 | 6 | 6 |
| 5 | Adrian Ungur | 1 | 3 | | Jaroslav Pospíšil | 4 | 6 | 6 |
| | Jaroslav Pospíšil | 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/WC | F Volandri | 6 | 6 | | | | | | | | | | | | | | | |
| | A Smirnov | 0 | 0 | | 1/WC | F Volandri | 6$^5$ | 6 | 6 | | | | | | | | | |
| Q | R Becker | 6 | 4 | 7$^8$ | Q | R Becker | 7$^7$ | 4 | 3 | | | | | | | | | |
| WC | F Mergea | 3 | 6 | 6$^6$ | | | | | | 1/WC | F Volandri | 4 | 0$^r$ | | | | | |
| Q | T Androić | 3 | 6 | 7$^7$ | | | | | | 6 | D Lajović | 6 | 4 | | | | | |
| | K Čapkovič | 6 | 2 | 6$^3$ | Q | T Androić | 4 | 5 | | | | | | | | | | |
| | A Michon | 4 | 4 | | 6 | D Lajović | 6 | 7 | | | | | | | | | | |
| 6 | D Lajović | 6 | 6 | | | | | | | | | | | | 6 | D Lajović | 4 | 3 |
| 4 | A Haider-Maurer | 6 | 0 | 3 | | | | | | | | | | | 8 | M Cecchinato | 6 | 6 |
| | B Pašanski | 3 | 6 | 6 | | B Pašanski | 7 | 2 | 6 | | | | | | | | | |
| | G Panfil | 7 | 6 | | | G Panfil | 5 | 6 | 3 | | | | | | | | | |
| | R Machado | 5 | 2 | | | | | | | | B Pašanski | 1 | 6 | 2 | | | | |
| Q | M Delić | 6 | 6 | | | | | | | 8 | M Cecchinato | 6 | 4 | 6 | | | | |
| | T Angelinos | 3 | 2 | | Q | M Delić | 2 | 1 | | | | | | | | | | |
| | P Červenák | 1 | 1 | | 8 | M Cecchinato | 6 | 6 | | | | | | | | | | |
| 8 | M Cecchinato | 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 | A Ungur | 6 | 7$^7$ | | | | | | | | | | | | | | |
| Q | R Sabău | 1 | 6$^2$ | | 5 | A Ungur | 6$^5$ | 6 | 7$^8$ | | | | | | | | |
| | S Diez | 6 | 4 | 6 | | S Diez | 7$^7$ | 3 | 6$^6$ | | | | | | | | |
| | B Westerhof | 3 | 6 | 4 | | | | | | 5 | A Ungur | 7 | 6 | | | | |
| | V Crivoi | 1 | 2 | | | | | | | 3 | J Reister | 5 | 4 | | | | |
| LL | T Grozdanov | 6 | 6 | | LL | T Grozdanov | 2 | 2 | | | | | | | | | |
| WC | Alexandru-Daniel Carpen | 1 | 0 | | 3 | J Reister | 6 | 6 | | | | | | | | | |
| 3 | J Reister | 6 | 6 | | | | | | | | | | | 5 | A Ungur | 1 | 3 |
| 9 | T Schoorel | 6 | 6 | | | | | | | | | | | | J Pospíšil | 6 | 6 |
| | P Torebko | 2 | 2 | | 9 | T Schoorel | 6$^3$ | 2 | | | | | | | | | |
| | R Marcora | 3 | 2 | | | J Pospíšil | 7$^7$ | 6 | | | | | | | | | |
| | J Pospíšil | 6 | 6 | | | | | | | | J Pospíšil | 6 | 6 | | | | |
| | A Giannessi | 6 | 4 | 6 | | | | | | | A Giannessi | 1 | 4 | | | | |
| | M Pavić | 2 | 6 | 2 | | A Giannessi | 7$^7$ | 6$^5$ | 6 | | | | | | | | |
| WC | Rareș Ispas | 1 | 1 | | 2 | J Hájek | 6$^2$ | 7$^7$ | 4 | | | | | | | | |
| 2 | J Hájek | 6 | 6 | | | | | | | | | | | | | | |