# 2018 Challenger La Manche – Singles

Mathias Bourgue was the defending champion but lost in the second round to Constant Lestienne.
Maximilian Marterer won the title after defeating Lestienne 6–4, 7–5 in the final.

## Seeds

* Gilles Simon (second round)
* Maximilian Marterer (champion)
* Malek Jaziri (second round)
* Matteo Berrettini (semifinals)
* Oscar Otte (second round)
* Norbert Gombos (first round)
* Kenny de Schepper (quarterfinals)
* Calvin Hemery (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 |
| | Mats Moraing | 3 | 4 | | | | |
| WC | Constant Lestienne | 6 | 6 | | | | |
| WC | Constant Lestienne | 6 | 6 | WC | Constant Lestienne | 4 | 5 |
| | | | | 2 | Maximilian Marterer | 6 | 7 |
| 4 | Matteo Berrettini | 4 | 6$^7$ | 2 | Maximilian Marterer | 6 | 7 |
| 2 | Maximilian Marterer | 6 | 7$^9$ | | | | |

### 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 | G Simon | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| | B Bonzi | 4 | 6$^5$ | | 1 | G Simon | 4 | 4 | | | | | | | | | | |
| | G Oliveira | 5 | 6$^2$ | | | M Moraing | 6 | 6 | | | | | | | | | | |
| | M Moraing | 7 | 7$^7$ | | | | | | | | M Moraing | 6 | 6 | | | | | |
| WC | A Hoang | 6 | 4 | 6$^7$ | | | | | | Q | M Ymer | 2 | 2 | | | | | |
| Q | M Ymer | 3 | 6 | 7$^9$ | Q | M Ymer | 6 | 6 | | | | | | | | | | |
| | G Sakharov | 6 | 6 | | | G Sakharov | 4 | 4 | | | | | | | | | | |
| 8 | C Hemery | 2 | 1 | | | | | | | | | | | | | M Moraing | 3 | 4 |
| 3/Alt | M Jaziri | 6 | 6 | | | | | | | | | | | | WC | C Lestienne | 6 | 6 |
| WC | G Blancaneaux | 4 | 4 | | 3/Alt | M Jaziri | 6$^8$ | 2 | | | | | | | | | | |
| | T Kamke | 7$^7$ | 6 | | | T Kamke | 7$^{10}$ | 6 | | | | | | | | | | |
| | V Šafránek | 6$^1$ | 4 | | | | | | | | T Kamke | 3 | 6 | 3 | | | | |
| WC | C Lestienne | 6 | 6 | | | | | | | WC | C Lestienne | 6 | 4 | 6 | | | | |
| | D Novak | 1 | 2 | | WC | C Lestienne | 6 | 1 | 6 | | | | | | | | | |
| | M Bourgue | 6 | 6 | | | M Bourgue | 2 | 6 | 3 | | | | | | | | | |
| 6 | N Gombos | 3 | 4 | | | | | | | | | | | | | | | |

### 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 |
| 7 | K de Schepper | 6 | 3 | 6 | | | | | | | | | | | | | |
| WC | C Denolly | 3 | 6 | 4 | 7 | K de Schepper | w/o | | | | | | | | | | |
| | C Taberner | 1 | 1 | | | A Vatutin | | | | | | | | | | | |
| | A Vatutin | 6 | 6 | | | | | | | 7 | K de Schepper | 4 | 5 | | | | |
| | A Pavlásek | 6 | 2 | 6 | | | | | | 4 | M Berrettini | 6 | 7 | | | | |
| Q | R Boutillier | 4 | 6 | 4 | | A Pavlásek | 3 | 6$^3$ | | | | | | | | | |
| LL | Maxime Tabatruong | 7$^7$ | 5 | 4 | 4 | M Berrettini | 6 | 7$^7$ | | | | | | | | | |
| 4 | M Berrettini | 6$^3$ | 7 | 6 | | | | | | | | | | 4 | M Berrettini | 4 | 6$^7$ |
| 5 | O Otte | 6 | 6 | | | | | | | | | | | 2 | M Marterer | 6 | 7$^9$ |
| Q | J Clarke | 2 | 2 | | 5 | O Otte | 4 | 6 | 3 | | | | | | | | |
| | K Majchrzak | 3 | 1$^r$ | | Q | A Popyrin | 6 | 3 | 6 | | | | | | | | |
| Q | A Popyrin | 6 | 2 | | | | | | | Q | A Popyrin | 2 | 4 | | | | |
| | T Brkić | 6$^2$ | 2 | | | | | | | 2 | M Marterer | 6 | 6 | | | | |
| | L Vanni | 7$^7$ | 6 | | | L Vanni | 4 | 3 | | | | | | | | | |
| | J Munar | 3 | 6$^4$ | | 2 | M Marterer | 6 | 6 | | | | | | | | | |
| 2 | M Marterer | 6 | 7$^7$ | | | | | | | | | | | | | | |