# 2008 Allianz Suisse Open Gstaad – Singles

Paul-Henri Mathieu was the defending champion, but lost in the second round to Marin Čilić.
Unseeded Victor Hănescu won in the final 6–3, 6–4, against seventh-seeded Igor Andreev.

## Seeds

The top four seeds receive a bye into the second round.
* Stanislas Wawrinka (semifinals)
* Paul-Henri Mathieu (second round)
* Mikhail Youzhny (quarterfinals)
* Ivo Karlović (second round)
* Andreas Seppi (first round)
* Nicolas Kiefer (second round, withdrew due to a right toe injury)
* Igor Andreev (final)
* Guillermo Cañas (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 |
| 1 | Stanislas Wawrinka | 3 | 6 | 4 | | | | |
| | Victor Hănescu | 6 | 3 | 6 | | | | |
| | Victor Hănescu | 6 | 3 | 6 | | Victor Hănescu | 6 | 6 |
| | | | | | 7 | Igor Andreev | 3 | 4 |
| | Guillermo García López | 6$^2$ | 7 | 6$^5$ | 7 | Igor Andreev | 3 | 4 |
| 7 | Igor Andreev | 7$^7$ | 5 | 7$^7$ | | | | |

### 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 | Semifinals |
| | | | | | 1 | S Wawrinka | 7$^8$ | 5 | 7$^7$ | | | | | | | | | | |
| WC | R Roshardt | 2 | 6 | 4 | WC | S Bohli | 6$^6$ | 7 | 6$^3$ | | | | | | | | | | |
| WC | S Bohli | 6 | 4 | 6 | | | | | | 1 | S Wawrinka | 4 | 6 | 7$^7$ | | | | | |
| | M Vassallo Argüello | 3 | 4 | | | | | | | 8 | G Cañas | 6 | 4 | 6$^2$ | | | | | |
| | K Vliegen | 6 | 6 | | | K Vliegen | | | | | | | | | | | | | |
| | I Minář | 6$^9$ | 3 | | 8 | G Cañas | w/o | | | | | | | | | | | | |
| 8 | G Cañas | 7$^{11}$ | 6 | | | | | | | | | | | | 1 | S Wawrinka | 3 | 6 | 4 |
| | | | | | | | | | | | | | | | | V Hănescu | 6 | 3 | 6 |
| | | | | | 4 | I Karlović | 7$^7$ | 6$^3$ | 6$^{11}$ | | | | | | | | | | |
| | O Patience | 6$^4$ | 2 | | | V Hănescu | 6$^4$ | 7$^7$ | 7$^{13}$ | | | | | | | | | | |
| | V Hănescu | 7$^7$ | 6 | | | | | | | | V Hănescu | 6 | 7$^7$ | | | | | | |
| | L Horna | 6$^5$ | 7$^8$ | 5 | | | | | | Q | J Chardy | 3 | 6$^3$ | | | | | | |
| Q | J Chardy | 7$^7$ | 6$^6$ | 7 | Q | J Chardy | 6$^1$ | 7$^7$ | 7$^7$ | | | | | | | | | | |
| Q | D Meffert | 6 | 5 | 6 | Q | D Meffert | 7$^7$ | 6$^5$ | 6$^4$ | | | | | | | | | | |
| 5 | A Seppi | 2 | 7 | 4 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | N Kiefer | 6 | 6 | | | | | | | | | | | | | | | |
| Q | G Naso | 3 | 2 | | 6 | N Kiefer | | | | | | | | | | | | |
| WC | M Lammer | 7 | 3 | 2 | | G García López | w/o | | | | | | | | | | | |
| | G García López | 5 | 6 | 6 | | | | | | G García López | 4 | 7 | 6 | | | | | |
| | F Cipolla | 5 | 6 | 6 | | | | | 3 | M Youzhny | 6 | 5 | 3 | | | | | |
| | J Vaněk | 7 | 4 | 4 | | F Cipolla | 3 | 2 | | | | | | | | | | |
| | | | | | 3 | M Youzhny | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | G García López | 6$^2$ | 7 | 6$^5$ |
| 7 | I Andreev | 6 | 7 | | | | | | | | | | | 7 | I Andreev | 7$^7$ | 5 | 7$^7$ |
| | M Daniel | 4 | 5 | | 7 | I Andreev | 7 | 6 | | | | | | | | | | |
| | F Serra | 7$^7$ | 7$^7$ | | | F Serra | 5 | 4 | | | | | | | | | | |
| | D Gimeno Traver | 6$^2$ | 6$^5$ | | | | | | 7 | I Andreev | 7$^7$ | 6 | | | | | | |
| Q | J Ouanna | 3 | 4 | | | | | | | M Čilić | 6$^4$ | 3 | | | | | | |
| | M Čilić | 6 | 6 | | | M Čilić | 6 | 6 | | | | | | | | | | |
| | | | | | 2 | P-H Mathieu | 3 | 4 | | | | | | | | | | |