# 2018 Open de Guadeloupe – Singles

Malek Jaziri was the defending champion but chose not to defend his title.
Dušan Lajović won the title after defeating Denis Kudla 6–4, 6–0 in the final.

## Seeds

* Stefanos Tsitsipas (second round)
* Gastão Elias (second round)
* Dušan Lajović (champion)
* Ruben Bemelmans (semifinals)
* Peter Polansky (second round)
* Denis Kudla (final)
* Calvin Hemery (quarterfinals)
* Bradley Klahn (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 | Final | Final | Final | Final |
| | Christian Garín | 2 | 2 | | | | |
| 3/WC | Dušan Lajović | 6 | 6 | | | | |
| 3/WC | Dušan Lajović | 6 | 6 | 3/WC | Dušan Lajović | 6 | 6 |
| | | | | 6 | Denis Kudla | 4 | 0 |
| 4 | Ruben Bemelmans | 2 | 6$^6$ | 6 | Denis Kudla | 4 | 0 |
| 6 | Denis Kudla | 6 | 7$^8$ | | | | |

### 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/WC | S Tsitsipas | 6 | 6 | | | | | | | | | | | | | | | |
| WC | C Denolly | 3 | 3 | | 1/WC | S Tsitsipas | 6$^4$ | 5 | | | | | | | | | | |
| | C Garín | 4 | 6 | 7$^7$ | | C Garín | 7$^7$ | 7 | | | | | | | | | | |
| | V Galović | 6 | 2 | 6$^3$ | | | | | | | C Garín | 7 | 7$^8$ | | | | | |
| | J-P Smith | 7 | 4 | | | | | | | | J-P Smith | 5 | 6$^6$ | | | | | |
| | A Santillan | 5 | 3$^r$ | | | J-P Smith | 7$^7$ | 6 | | | | | | | | | | |
| Q | Laurent Rochette | 0 | 5 | | 5 | P Polansky | 6$^3$ | 3 | | | | | | | | | | |
| 5 | P Polansky | 6 | 7 | | | | | | | | | | | | | C Garín | 2 | 2 |
| 3/WC | D Lajović | 6 | 6 | | | | | | | | | | | | 3/WC | D Lajović | 6 | 6 |
| | B Bonzi | 3 | 3 | | 3/WC | D Lajović | 6 | 6 | | | | | | | | | | |
| | D King | 6$^5$ | 6 | 6 | | D King | 3 | 4 | | | | | | | | | | |
| Q | Tom Jomby | 7$^7$ | 1 | 2 | | | | | | 3/WC | D Lajović | 7$^7$ | 2 | 6 | | | | |
| | C Harrison | 6 | 6 | | | | | | | 8 | B Klahn | 6$^5$ | 6 | 3 | | | | |
| WC | G Mina | 4 | 2 | | | C Harrison | 6 | 6$^4$ | 4 | | | | | | | | | |
| | A Ward | 2 | 0 | | 8 | B Klahn | 3 | 7$^7$ | 6 | | | | | | | | | |
| 8 | B Klahn | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | C Hemery | 6 | 4 | | | | | | | | | | | | | | |
| | R Olivo | 3 | 1$^r$ | | 7 | C Hemery | 2 | 7 | 7 | | | | | | | | |
| Q | S Gillé | 4 | 0 | | Alt | K Uchida | 6 | 5 | 5 | | | | | | | | |
| Alt | K Uchida | 6 | 6 | | | | | | | 7 | C Hemery | 2 | 4 | | | | |
| Q | Evan Song | 7 | 7$^7$ | | | | | | | 4 | R Bemelmans | 6 | 6 | | | | |
| | B Schnur | 5 | 6$^1$ | | Q | E Song | 4 | 4 | | | | | | | | | |
| | Y Mertens | 5 | 1 | | 4 | R Bemelmans | 6 | 6 | | | | | | | | | |
| 4 | R Bemelmans | 7 | 6 | | | | | | | | | | | 4 | R Bemelmans | 2 | 6$^6$ |
| 6 | D Kudla | 7$^7$ | 2 | 6 | | | | | | | | | | 6 | D Kudla | 6 | 7$^8$ |
| | M Bourgue | 6$^1$ | 6 | 1 | 6 | D Kudla | 6 | 6 | | | | | | | | | |
| PR | S Giraldo | 2 | 6 | 6$^9$ | | A Pavić | 1 | 1 | | | | | | | | | |
| | A Pavić | 6 | 3 | 7$^{11}$ | | | | | | 6 | D Kudla | 6 | 6 | | | | |
| Alt | L Glasspool | 4 | 1 | | | | | | | | F Peliwo | 3 | 4 | | | | |
| | F Peliwo | 6 | 6 | | | F Peliwo | 6 | 7 | | | | | | | | | |
| | D Novikov | 6$^8$ | 4 | | 2 | G Elias | 4 | 5 | | | | | | | | | |
| 2 | G Elias | 7$^{10}$ | 6 | | | | | | | | | | | | | | |