# 2009 Challenger DCNS de Cherbourg – Singles

Thierry Ascione was the defending champion, but lost in the final 2–6, 4–6, to Arnaud Clément.

## Seeds

* Christophe Rochus (first round)
* Arnaud Clément (champion)
* Nicolas Mahut (quarterfinals)
* Adrian Mannarino (semifinals)
* Mathieu Montcourt (second round)
* Josselin Ouanna (withdrew)
* Édouard Roger-Vasselin (semifinals)
* Alexandre Sidorenko (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

### Final four

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| | Thierry Ascione | 1 | 6 | 7 | | | | |
| 7 | Édouard Roger-Vasselin | 6 | 3 | 5 | | | | |
| 7 | Édouard Roger-Vasselin | 6 | 3 | 5 | | Thierry Ascione | 2 | 4 |
| | | | | | 2 | Arnaud Clément | 6 | 6 |
| 4 | Adrian Mannarino | 1 | 2 | | 2 | Arnaud Clément | 6 | 6 |
| 2 | Arnaud Clément | 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 | Semifinals |
| 1 | C Rochus | 6$^7$ | 3 | | | | | | | | | | | | | | | | |
| | T Ascione | 7$^9$ | 6 | | | T Ascione | 6 | 6 | | | | | | | | | | | |
| | M Slanar | 6 | 6 | | | M Slanar | 1 | 4 | | | | | | | | | | | |
| LL | Eric Gomes | 1 | 2 | | | | | | | | T Ascione | 6 | 6$^5$ | 7$^7$ | | | | | |
| | D Meffert | 4 | 6 | 6 | | | | | | | D Meffert | 4 | 7$^7$ | 6$^3$ | | | | | |
| | S Galvani | 6 | 2 | 1 | | D Meffert | 6 | 5 | 6 | | | | | | | | | | |
| WC | B Paire | 3 | 4 | | 5 | M Montcourt | 4 | 7 | 3 | | | | | | | | | | |
| 5 | M Montcourt | 6 | 6 | | | | | | | | | | | | | T Ascione | 1 | 6 | 7 |
| 3 | N Mahut | 3 | 6 | 6 | | | | | | | | | | | 7 | É Roger-Vasselin | 6 | 3 | 5 |
| | P Lorenzi | 6 | 3 | 2 | 3 | N Mahut | | | | | | | | | | | | | |
| | D Olejniczak | 3 | 2 | | | T Kamke | w/o | | | | | | | | | | | | |
| | T Kamke | 6 | 6 | | | | | | | 3 | N Mahut | 6$^5$ | 6 | 3 | | | | | |
| | R Ghedin | 2 | 6 | 1 | | | | | | 7 | É Roger-Vasselin | 7$^7$ | 4 | 6 | | | | | |
| | L Recouderc | 6 | 4 | 6 | | L Recouderc | 7 | 1 | 3 | | | | | | | | | | |
| WC | S Robert | 3 | 6$^3$ | | 7 | É Roger-Vasselin | 5 | 6 | 6 | | | | | | | | | | |
| 7 | É Roger-Vasselin | 6 | 7$^7$ | | | | | | | | | | | | | | | | |

### Bottom half

| 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 |
| 8 | A Sidorenko | 5 | | | | | | | | | | | | | | |
| WC | G Rufin | 4 | r | 8 | A Sidorenko | 3 | 4 | | | | | | | | | |
| | M Alund | 2 | 1 | Q | R Jouan | 6 | 6 | | | | | | | | | |
| Q | R Jouan | 6 | 6 | | | | | | Q | R Jouan | 3 | 6$^0$ | | | | |
| | S Jenkins | 6 | 6 | | | | | | 4 | A Mannarino | 6 | 7$^7$ | | | | |
| Q | J-C Faurel | 3 | 1 | | S Jenkins | 2 | 4 | | | | | | | | | |
| Q | R Bloomfield | 4 | 2 | 4 | A Mannarino | 6 | 6 | | | | | | | | | |
| 4 | A Mannarino | 6 | 6 | | | | | | | | | | 4 | A Mannarino | 1 | 2 |
| LL | A Kuznetsov | 1 | 3 | | | | | | | | | | 2 | A Clément | 6 | 6 |
| | M Fischer | 6 | 6 | | M Fischer | 6 | 2 | 3 | | | | | | | | |
| Q | T Oger | 3 | 6$^4$ | | G Bastl | 3 | 6 | 6 | | | | | | | | |
| | G Bastl | 6 | 7$^7$ | | | | | | | G Bastl | 1 | 6$^5$ | | | | |
| | J Reister | 6 | 6 | | | | | | 2 | A Clément | 6 | 7$^7$ | | | | |
| | M Yani | 3 | 2 | | J Reister | 6$^5$ | 6$^9$ | | | | | | | | | |
| WC | J Eysseric | 2 | 1 | 2 | A Clément | 7$^7$ | 7$^{11}$ | | | | | | | | | |
| 2 | A Clément | 6 | 6 | | | | | | | | | | | | | |