# 2022 Open de Rennes – Singles

Benjamin Bonzi was the defending champion but chose not to defend his title.
Ugo Humbert won the title after defeating Dominic Thiem 6–3, 6–0 in the final.

## Seeds

* Hugo Gaston (semifinals)
* Peter Gojowczyk (semifinals)
* Hugo Grenier (second round)
* Ugo Humbert (champion)
* Ryan Peniston (second round)
* Grégoire Barrère (quarterfinals)
* Benoît Paire (quarterfinals)
* Gijs Brouwer (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 |
| 1 | Hugo Gaston | 2 | 5 | | | | |
| WC | Dominic Thiem | 6 | 7 | | | | |
| WC | Dominic Thiem | 6 | 7 | WC | Dominic Thiem | 3 | 0 |
| | | | | 4 | Ugo Humbert | 6 | 6 |
| 4 | Ugo Humbert | 6 | 6 | 4 | Ugo Humbert | 6 | 6 |
| 2 | Peter Gojowczyk | 3 | 4 | | | | |

### 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 | H Gaston | 7 | 6 | | | | | | | | | | | | | | | |
| Q | Y Mertens | 5 | 4 | | 1 | H Gaston | 6 | 4 | 6 | | | | | | | | | |
| WC | G Debru | 4 | 6 | 6 | WC | G Debru | 2 | 6 | 3 | | | | | | | | | |
| | M Rosenkranz | 6 | 3 | 4 | | | | | | 1 | H Gaston | 6 | 6 | | | | | |
| Q | M Topo | 6 | 6$^5$ | 3 | | | | | | 7 | B Paire | 3 | 1 | | | | | |
| | C Tabur | 1 | 7$^7$ | 6 | | C Tabur | 3 | 3 | | | | | | | | | | |
| | D Added | 6$^3$ | 6 | 5 | 7 | B Paire | 6 | 6 | | | | | | | | | | |
| 7 | B Paire | 7$^7$ | 4 | 7 | | | | | | | | | | | 1 | H Gaston | 2 | 5 |
| 3 | H Grenier | 6 | 6 | | | | | | | | | | | | WC | D Thiem | 6 | 7 |
| Q | Maxime Mora | 2 | 2 | | 3 | H Grenier | 6 | 3 | 6$^4$ | | | | | | | | | |
| | A Andreev | 3 | 7$^7$ | 7$^7$ | | A Andreev | 4 | 6 | 7$^7$ | | | | | | | | | |
| | M Janvier | 6 | 6$^5$ | 6$^1$ | | | | | | | A Andreev | 6 | 3 | 2 | | | | |
| WC | D Thiem | 4 | 6 | 6 | | | | | | WC | D Thiem | 3 | 6 | 6 | | | | |
| | G Simon | 6 | 3 | 2 | WC | D Thiem | 6 | 6 | | | | | | | | | | |
| | A Escoffier | 3 | 6$^5$ | | 5 | R Peniston | 3 | 4 | | | | | | | | | | |
| 5 | R Peniston | 6 | 7$^7$ | | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | G Brouwer | 6$^3$ | 6 | 6 | | | | | | | | | | | | | | |
| Q | MH Rehberg | 7$^7$ | 4 | 4 | 8 | G Brouwer | 7 | 3 | 6 | | | | | | | | | |
| WC | C Chidekh | 6 | 5 | 6 | WC | C Chidekh | 5 | 6 | 3 | | | | | | | | | |
| | G Décamps | 2 | 7 | 1 | | | | | | 8 | G Brouwer | 1 | 6$^5$ | | | | | |
| | A Bellier | 6 | 6 | | | | | | | 4 | U Humbert | 6 | 7$^7$ | | | | | |
| | A Vatutin | 4 | 4 | | | A Bellier | 4 | 1 | | | | | | | | | | |
| Q | K Friberg | 3 | 4 | | 4 | U Humbert | 6 | 6 | | | | | | | | | | |
| 4 | U Humbert | 6 | 6 | | | | | | | | | | | | 4 | U Humbert | 6 | 6 |
| 6 | G Barrère | 6 | 6 | | | | | | | | | | | | 2 | P Gojowczyk | 3 | 4 |
| | H Moriya | 3 | 2 | | 6 | G Barrère | 7$^7$ | 6 | | | | | | | | | | |
| | E Furness | 7$^7$ | 6 | | | E Furness | 6$^2$ | 4 | | | | | | | | | | |
| Q | F Bergevi | 6$^3$ | 2 | | | | | | | 6 | G Barrère | 6$^2$ | 6 | 5 | | | | |
| | D Masur | 6$^9$ | 6 | 6 | | | | | | 2 | P Gojowczyk | 7$^7$ | 4 | 7 | | | | |
| | J De Loore | 7$^{11}$ | 2 | 4 | | D Masur | 6 | 3 | 5 | | | | | | | | | |
| | K de Schepper | 7$^7$ | 3 | 2 | 2 | P Gojowczyk | 2 | 6 | 7 | | | | | | | | | |
| 2 | P Gojowczyk | 6$^4$ | 6 | 6 | | | | | | | | | | | | | | |