# 2020 Open du Pays d'Aix – Singles

Pablo Cuevas was the defending champion but lost in the quarterfinals to Daniel Altmaier.
Oscar Otte won the title after defeating Thiago Seyboth Wild 6–2, 6–7$^{(4–7)}$, 6–4 in the final.

## Seeds

* Gilles Simon (first round)
* Pablo Cuevas (quarterfinals)
* Gianluca Mager (first round)
* Hugo Dellien (first round)
* Roberto Carballés Baena (second round)
* Alexei Popyrin (first round)
* Federico Coria (first round)
* Marco Cecchinato (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 | Final | Final | Final | Final | Final |
| | Alejandro Tabilo | 6$^4$ | 3 | | | | | |
| | Thiago Seyboth Wild | 7$^7$ | 6 | | | | | |
| | Thiago Seyboth Wild | 7$^7$ | 6 | | Thiago Seyboth Wild | 2 | 7$^7$ | 4 |
| | | | | SE | Oscar Otte | 6 | 6$^4$ | 6 |
| SE | Oscar Otte | 5 | | SE | Oscar Otte | 6 | 6$^4$ | 6 |
| SE | Daniel Altmaier | 4$^r$ | | | | | | |

### Top 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 |
| 1/WC | G Simon | 5 | 2 | | | | | | | | | | | | |
| | F Gaio | 7 | 6 | | | F Gaio | 6 | 6 | | | | | | | |
| Q | E Ymer | 6 | 2 | 6 | Q | E Ymer | 4 | 4 | | | | | | | |
| LL | R Bemelmans | 4 | 6 | 4 | | | | | F Gaio | 6 | 2 | 4 | | | |
| | A Tabilo | 7 | 7 | | | | | | A Tabilo | 4 | 6 | 6 | | | |
| | R Marcora | 5 | 5 | | | A Tabilo | 6 | 7$^7$ | | | | | | | |
| | M Safwat | 0 | 1 | | 8 | M Cecchinato | 3 | 6$^5$ | | | | | | | |
| 8 | M Cecchinato | 6 | 6 | | | | | | | | | | A Tabilo | 6$^4$ | 3 |
| 3 | G Mager | 3 | 5 | | | | | | | | | | T Seyboth Wild | 7$^7$ | 6 |
| | T Seyboth Wild | 6 | 7 | | | T Seyboth Wild | 6 | 7 | | | | | | | |
| Q | H Gaston | 3 | 7$^8$ | 3 | Q | R Cid Subervi | 1 | 5 | | | | | | | |
| Q | R Cid Subervi | 6 | 6$^6$ | 6 | | | | | T Seyboth Wild | 3 | 6 | 6 | | | |
| | B Klahn | 0 | 2 | | | | | | A Hoang | 6 | 2 | 1 | | | |
| | A Hoang | 6 | 6 | | | A Hoang | 6 | 6 | | | | | | | |
| WC | Q Halys | 7 | 6 | | WC | Q Halys | 3 | 3 | | | | | | | |
| 6 | A Popyrin | 5 | 3 | | | | | | | | | | | | |

### 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 |
| 5 | R Carballés Baena | 6 | 6 | | | | | | | | | | | | | |
| PR | D Brown | 4 | 4 | | 5 | R Carballés Baena | 7 | 3 | 5 | | | | | | | |
| | D Petrović | 6 | 6$^3$ | 6 | | D Petrović | 5 | 6 | 7 | | | | | | | |
| | JP Varillas | 1 | 7$^7$ | 2 | | | | | | | D Petrović | 3 | 2 | | | |
| LL | A Cazaux | 3 | 6 | 3 | | | | | | SE | O Otte | 6 | 6 | | | |
| SE | O Otte | 6 | 3 | 6 | SE | O Otte | 7$^7$ | 6 | | | | | | | | |
| | L Mayer | 6 | 6 | | | L Mayer | 6$^5$ | 3 | | | | | | | | |
| 4 | H Dellien | 3 | 2 | | | | | | | | | | | SE | O Otte | 5 |
| 7 | F Coria | 1 | 6 | 3 | | | | | | | | | | SE | D Altmaier | 4$^r$ |
| SE | D Altmaier | 6 | 4 | 6 | SE | D Altmaier | 7 | 6 | | | | | | | | |
| | P Sousa | 3 | 6 | 6 | | P Sousa | 5 | 3 | | | | | | | | |
| | J Jung | 6 | 2 | 4 | | | | | | SE | D Altmaier | 7 | 6 | | | |
| | E Gómez | 7$^9$ | 3 | 4 | | | | | | 2 | P Cuevas | 5 | 3 | | | |
| WC | H Mayot | 6$^7$ | 6 | 6 | WC | H Mayot | 3 | 4 | | | | | | | | |
| Q | R Olivo | 2 | 3 | | 2 | P Cuevas | 6 | 6 | | | | | | | | |
| 2 | P Cuevas | 6 | 6 | | | | | | | | | | | | | |