# 2009 Allianz Suisse Open Gstaad – Singles

Victor Hănescu was the defending champion, but lost in the second round to Florent Serra.
Thomaz Bellucci won in the final 6–4, 7–6$^{(7–2)}$, against Andreas Beck.

## Seeds

* Stanislas Wawrinka (second round)
* Philipp Kohlschreiber (first round)
* Igor Andreev (semifinals)
* Victor Hănescu (second round, retired)
* Jérémy Chardy (quarterfinals)
* Nicolas Kiefer (quarterfinals, retired)
* Feliciano López (first round)
* Paul-Henri Mathieu (first 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 |
| Q | Thomaz Bellucci | 6 | 7 | | | | |
| 3 | Igor Andreev | 4 | 5 | | | | |
| 3 | Igor Andreev | 4 | 5 | Q | Thomaz Bellucci | 6 | 7$^7$ |
| | | | | | Andreas Beck | 4 | 6$^2$ |
| | Marcos Daniel | 6$^3$ | 3 | | Andreas Beck | 4 | 6$^2$ |
| | Andreas Beck | 7$^7$ | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | S Wawrinka | 6 | 7 | | | | | | | | | | | | | | |
| Q | F del Bonis | 4 | 5 | | 1 | S Wawrinka | 4 | 4 | | | | | | | | | |
| LL | M Lammer | 7$^7$ | 6$^5$ | 4 | Q | T Bellucci | 6 | 6 | | | | | | | | | |
| Q | T Bellucci | 6$^5$ | 7$^7$ | 6 | | | | | | Q | T Bellucci | 3 | 1 | | | | |
| Q | F Dustov | 6$^2$ | 6 | 2 | | | | | | 6 | N Kiefer | 6 | 0$^r$ | | | | |
| | I Navarro | 7$^7$ | 4 | 6 | | I Navarro | 3 | 7$^7$ | 2 | | | | | | | | |
| | J Acasuso | 6$^5$ | 2 | | 6 | N Kiefer | 6 | 6$^3$ | 6 | | | | | | | | |
| 6 | N Kiefer | 7$^7$ | 6 | | | | | | | | | | | Q | T Bellucci | 6 | 7 |
| 3 | I Andreev | 7 | 6 | | | | | | | | | | | 3 | I Andreev | 4 | 5 |
| | D Junqueira | 5 | 4 | | 3 | I Andreev | 6 | 6 | | | | | | | | | |
| | F Cipolla | 1 | 0 | | | J Hernych | 4 | 1 | | | | | | | | | |
| | J Hernych | 6 | 6 | | | | | | | 3 | I Andreev | 6 | 6 | | | | |
| | M Youzhny | 6 | 5 | 6 | | | | | | 5 | J Chardy | 3 | 3 | | | | |
| WC | G Gaudio | 3 | 7 | 4 | | M Youzhny | 3 | 7 | 3 | | | | | | | | |
| Q | T Ascione | 3 | 3 | | 5 | J Chardy | 6 | 5 | 6 | | | | | | | | |
| 5 | J Chardy | 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 | Semifinals | Semifinals | Semifinals |
| 8 | P-H Mathieu | 6$^3$ | 6$^6$ | | | | | | | | | | | | |
| | M Daniel | 7$^7$ | 7$^8$ | | | M Daniel | 6 | 7$^{10}$ | | | | | | | |
| | J Benneteau | 7$^7$ | 7 | | | J Benneteau | 3 | 6$^8$ | | | | | | | |
| WC | S Bohli | 6$^4$ | 5 | | | | | | | M Daniel | 6 | 7$^7$ | | | |
| | M Vassallo Argüello | 3 | 2 | | | | | | | F Serra | 4 | 6$^1$ | | | |
| | F Serra | 6 | 6 | | | F Serra | 6 | 0 | | | | | | | |
| | I Minář | 2 | 2 | | 4 | V Hănescu | 4 | 0$^r$ | | | | | | | |
| 4 | V Hănescu | 6 | 6 | | | | | | | | | | M Daniel | 6$^3$ | 3 |
| 7 | F López | 4 | 7$^7$ | 3 | | | | | | | | | A Beck | 7$^7$ | 6 |
| | G García López | 6 | 6$^4$ | 6 | | G García López | 6$^3$ | 6 | 6$^3$ | | | | | | |
| WC | M Chiudinelli | 6 | 6$^7$ | 4 | | A Beck | 7$^7$ | 1 | 7$^7$ | | | | | | |
| | A Beck | 4 | 7$^9$ | 6 | | | | | | A Beck | 6 | 7$^7$ | | | |
| | T Gabashvili | 1 | 7$^7$ | 6 | | | | | | V Crivoi | 4 | 6$^5$ | | | |
| | P Capdeville | 6 | 6$^3$ | 3 | | T Gabashvili | 4 | 4 | | | | | | | |
| | V Crivoi | 6 | 6 | | | V Crivoi | 6 | 6 | | | | | | | |
| 2 | P Kohlschreiber | 4 | 0 | | | | | | | | | | | | |