# 2017 Brest Challenger – Singles

Norbert Gombos was the defending champion but lost in the first round to Corentin Moutet.
Moutet won the title after defeating Stefanos Tsitsipas 6–2, 7–6$^{(10–8)}$ in the final.

## Seeds

* Daniil Medvedev (quarterfinals)
* Marius Copil (semifinals)
* Norbert Gombos (first round)
* Jérémy Chardy (quarterfinals)
* Malek Jaziri (first round)
* Laslo Đere (second round)
* Andrey Kuznetsov (first round)
* Matteo Berrettini (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 | Semifinals | Final | Final | Final | Final |
| | Yannick Maden | 6 | 6$^2$ | 4 | | | | |
| WC | Corentin Moutet | 4 | 7$^7$ | 6 | | | | |
| WC | Corentin Moutet | 4 | 7$^7$ | 6 | WC | Corentin Moutet | 6 | 7$^{10}$ |
| | | | | | SE | Stefanos Tsitsipas | 2 | 6$^8$ |
| SE | Stefanos Tsitsipas | 7$^7$ | 7$^7$ | | SE | Stefanos Tsitsipas | 2 | 6$^8$ |
| 2 | Marius Copil | 6$^2$ | 6$^3$ | | | | | |

### 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 | Semifinals |
| 1 | D Medvedev | 4 | 6 | 6 | | | | | | | | | | | | | | |
| SE | M Donati | 6 | 1 | 3 | 1 | D Medvedev | 6 | 3 | 7$^7$ | | | | | | | | | |
| | B Bonzi | 4 | 7 | 6 | | B Bonzi | 4 | 6 | 6$^2$ | | | | | | | | | |
| | A De Greef | 6 | 5 | 3 | | | | | | 1 | D Medvedev | 6$^1$ | 4 | | | | | |
| | Y Hanfmann | 6 | 4 | 4 | | | | | | | Y Maden | 7$^7$ | 6 | | | | | |
| | M Bourgue | 3 | 6 | 6 | | M Bourgue | 4 | 2 | | | | | | | | | | |
| | Y Maden | 7$^7$ | 6 | | | Y Maden | 6 | 6 | | | | | | | | | | |
| 5 | M Jaziri | 6$^4$ | 4 | | | | | | | | | | | | Y Maden | 6 | 6$^2$ | 4 |
| 3 | N Gombos | 6 | 4 | 1 | | | | | | | | | | WC | C Moutet | 4 | 7$^7$ | 6 |
| WC | C Moutet | 4 | 6 | 6 | WC | C Moutet | 6 | 6$^6$ | 6 | | | | | | | | | |
| Q | I Marchenko | 5 | 3 | | Q | T Lamasine | 4 | 7$^8$ | 3 | | | | | | | | | |
| Q | T Lamasine | 7 | 6 | | | | | | | WC | C Moutet | 6 | 6 | | | | | |
| Alt | G Sakharov | 6 | 6 | | | | | | | Alt | G Sakharov | 3 | 1 | | | | | |
| WC | D Guez | 2 | 4 | | Alt | G Sakharov | 4 | 6 | 6 | | | | | | | | | |
| WC | G Blancaneaux | 4 | 6 | 1 | 6 | L Đere | 6 | 2 | 2 | | | | | | | | | |
| 6 | L Đere | 6 | 3 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | A Kuznetsov | 1 | 3 | | | | | | | | | | | | | |
| SE | S Tsitsipas | 6 | 6 | | SE | S Tsitsipas | 6 | 6 | | | | | | | | |
| | U Ignatik | 4 | 1 | | | S Caruso | 3 | 3 | | | | | | | | |
| | S Caruso | 6 | 6 | | | | | | SE | S Tsitsipas | 7$^7$ | 6 | | | | |
| | A Vatutin | 6 | 2 | 1 | | | | | 4 | J Chardy | 6$^5$ | 4 | | | | |
| | A Giannessi | 4 | 6 | 6 | | A Giannessi | 1 | 1 | | | | | | | | |
| LL | A Arnaboldi | 3 | 2 | | 4 | J Chardy | 6 | 6 | | | | | | | | |
| 4 | J Chardy | 6 | 6 | | | | | | | | | | SE | S Tsitsipas | 7$^7$ | 7$^7$ |
| 8 | M Berrettini | 6 | 4 | 7$^7$ | | | | | | | | | 2 | M Copil | 6$^2$ | 6$^3$ |
| | K Kravchuk | 4 | 6 | 6$^3$ | 8 | M Berrettini | 3 | 0 | | | | | | | | |
| Q | G Mina | 6 | 6$^3$ | 2 | WC | U Humbert | 6 | 6 | | | | | | | | |
| WC | U Humbert | 3 | 7$^7$ | 6 | | | | | WC | U Humbert | 4 | 4 | | | | |
| | A Šetkić | 6 | 6$^6$ | 4 | | | | | 2 | M Copil | 6 | 6 | | | | |
| | L Vanni | 2 | 7$^8$ | 6 | | L Vanni | 6$^2$ | 1 | | | | | | | | |
| Q | Y Reuter | 3 | 4 | | 2 | M Copil | 7$^7$ | 6 | | | | | | | | |
| 2 | M Copil | 6 | 6 | | | | | | | | | | | | | |