# 2013 AON Open Challenger – Singles

Albert Montañés is the defending champion but lost in the first round to Gianluca Naso. Dustin Brown defeated Filippo Volandri 7–6$^{(7–5)}$, 6–3

## Seeds

* Albert Montañés (first round)
* Albert Ramos (first round)
* Pablo Carreño Busta (quarterfinals)
* Paolo Lorenzi (semifinals)
* Andrey Kuznetsov (first round)
* Filippo Volandri (final)
* Jan Hájek (quarterfinals)
* Teymuraz Gabashvili (second round, retired)

## 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 |
| | Dustin Brown | 7$^{10}$ | 6 | | | | |
| 4 | Paolo Lorenzi | 6$^8$ | 2 | | | | |
| 4 | Paolo Lorenzi | 6$^8$ | 2 | | Dustin Brown | 7$^7$ | 6 |
| | | | | 6 | Filippo Volandri | 6$^5$ | 3 |
| 6 | Filippo Volandri | 6 | 6 | 6 | Filippo Volandri | 6$^5$ | 3 |
| | Andrej Martin | 2 | 1 | | | | |

### 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 | A Montañés | 4 | 7 | 4 | | | | | | | | | | | | | | |
| | G Naso | 6 | 5 | 6 | | G Naso | 3 | 4 | | | | | | | | | | |
| | A Arnaboldi | 5 | 7$^7$ | 6 | | A Arnaboldi | 6 | 6 | | | | | | | | | | |
| | J Mertl | 7 | 6$^4$ | 4 | | | | | | | A Arnaboldi | 6$^3$ | 7 | 1 | | | | |
| | D Brown | 6 | 6 | | | | | | | | D Brown | 7 | 6$^4$ | 6 | | | | |
| | M Trungelliti | 3 | 0 | | | D Brown | 7 | 4 | | | | | | | | | | |
| WC | G Mager | 6$^{13}$ | 3 | | 8 | T Gabashvili | 5 | 0$^r$ | | | | | | | | | | |
| 8 | T Gabashvili | 7$^{15}$ | 6 | | | | | | | | | | | | | D Brown | 7$^{10}$ | 6 |
| 4 | P Lorenzi | 6 | 3r | | | | | | | | | | | | 4 | P Lorenzi | 6$^8$ | 2 |
| | R Olivo | 2 | 0 | | 4 | P Lorenzi | 1 | 6 | 6 | | | | | | | | | |
| | DS Schwartzman | 7$^7$ | 6 | | | DS Schwartzman | 6 | 1 | 3 | | | | | | | | | |
| | G Olaso | 6$^4$ | 3 | | | | | | | 4 | P Lorenzi | 6 | 6 | | | | | |
| Q | Enrico Burzi | 3 | 5 | | | | | | | 7 | J Hájek | 2 | 0 | | | | | |
| | D Thiem | 6 | 7 | | | D Thiem | 4 | 4 | | | | | | | | | | |
| | M Teixeira | 4 | 6 | 3 | 7 | J Hájek | 6 | 6 | | | | | | | | | | |
| 7 | J Hájek | 6 | 3 | 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 |
| 6 | F Volandri | 3 | 6 | 7 | | | | | | | | | | | | | |
| Q | J Semrajc | 6 | 1 | 5 | 6 | F Volandri | 6 | 6 | | | | | | | | | |
| WC | Francesco Picco | 1 | 2 | | | M Cecchinato | 2 | 4 | | | | | | | | | |
| | M Cecchinato | 6 | 6 | | | | | | | 6 | F Volandri | 6 | 7 | | | | |
| | P Starace | 6 | 6 | | | | | | | 3 | P Carreño Busta | 3 | 5 | | | | |
| Alt | K Mesaroš | 4 | 2 | | | P Starace | 6$^2$ | 1 | | | | | | | | | |
| | A Giannessi | 6$^8$ | 2 | | 3 | P Carreño Busta | 7$^7$ | 6 | | | | | | | | | |
| 3 | P Carreño Busta | 7$^{10}$ | 6 | | | | | | | | | | | 6 | F Volandri | 6 | 6 |
| 5/WC | A Kuznetsov | 6$^5$ | 6 | 2 | | | | | | | | | | | A Martin | 2 | 1 |
| | A Martin | 7$^7$ | 4 | 6 | | A Martin | 6 | 6 | | | | | | | | | |
| Q | C Gómez-Herrera | 6 | 2 | 6$^5$ | | A Weintraub | 4 | 3 | | | | | | | | | |
| | A Weintraub | 2 | 6 | 7$^7$ | | | | | | | A Martin | 6 | 6 | | | | |
| | A di Mauro | 6 | 6 | | | | | | | | A di Mauro | 1 | 0 | | | | |
| | B Pašanski | 2 | 3 | | | A di Mauro | 4 | 6 | 6 | | | | | | | | |
| Q | Moritz Baumann | 6 | 1 | 6 | Q | M Baumann | 6 | 0 | 4 | | | | | | | | |
| 2 | A Ramos | 1 | 6 | 3 | | | | | | | | | | | | | |