# 2023 ATP Lyon Open – Singles

Arthur Fils defeated Francisco Cerúndolo in the final, 6–3, 7–5 to win the singles tennis title at the 2023 ATP Lyon Open. It was his first ATP Tour title.
Cameron Norrie was the defending champion, but lost in the semifinals to Cerúndolo.
Mikael Ymer was defaulted during his second-round match against Fils after he smashed the umpire's chair with his racket.

## Seeds

The top four seeds receive a bye into the second round.
* Félix Auger-Aliassime (quarterfinals, withdrew)
* Cameron Norrie (semifinals)
* Tommy Paul (quarterfinals)
* Francisco Cerúndolo (final)
* Miomir Kecmanović (second round)
* Sebastián Báez (quarterfinals)
* Richard Gasquet (first round)
* Brandon Nakashima (semifinals)

## 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 |
| WC | Arthur Fils | 7 | 4 | 7$^7$ | | | | |
| 8 | Brandon Nakashima | 5 | 6 | 6$^5$ | | | | |
| 8 | Brandon Nakashima | 5 | 6 | 6$^5$ | WC | Arthur Fils | 6 | 7 |
| | | | | | 4 | Francisco Cerúndolo | 3 | 5 |
| 4 | Francisco Cerúndolo | 6 | 6 | | 4 | Francisco Cerúndolo | 3 | 5 |
| 2 | Cameron Norrie | 3 | 0 | | | | | |

### 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/WC | F Auger-Aliassime | 7 | 6 | | | | | | | | | | |
| | M Purcell | 4 | 7$^8$ | 1 | Q | P Llamas Ruiz | 5 | 2 | | | | | | | | | | |
| Q | P Llamas Ruiz | 6 | 6$^6$ | 6 | | | | | | 1/WC | F Auger-Aliassime | | | | | | | |
| Q | Z Zhang | 3 | 2 | | | | | | | WC | A Fils | w/o | | | | | | |
| WC | A Fils | 6 | 6 | | WC | A Fils | 6 | | | | | | | | | | | |
| | M Ymer | 6 | 7 | | | M Ymer | 5$^d$ | | | | | | | | | | | |
| 7 | R Gasquet | 3 | 5 | | | | | | | | | | | WC | A Fils | 7 | 4 | 7$^7$ |
| | | | | | | | | | | | | | | 8 | B Nakashima | 5 | 6 | 6$^5$ |
| | | | | | 3 | T Paul | 7$^8$ | 4 | 6 | | | | | | | | | |
| | G Barrère | 6 | 6 | | | G Barrère | 6$^6$ | 6 | 3 | | | | | | | | | |
| | C Moutet | 4 | 2 | | | | | | | 3 | T Paul | 3 | 6$^4$ | | | | | |
| | A Rinderknech | 6 | 6 | | | | | | | 8 | B Nakashima | 6 | 7$^7$ | | | | | |
| Q | L Harris | 4 | 2 | | | A Rinderknech | 6$^6$ | 6 | 5 | | | | | | | | | |
| | D Schwartzman | 5 | 3 | | 8 | B Nakashima | 7$^8$ | 1 | 7 | | | | | | | | | |
| 8 | B Nakashima | 7 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | M Kecmanović | 6 | 6 | | | | | | | | | | | | | | | |
| LL | O Roca Batalla | 1 | 3 | | 5 | M Kecmanović | 4 | 5 | | | | | | | | | | |
| | J Draper | 6 | 6 | | | J Draper | 6 | 7 | | | | | | | | | | |
| | A Müller | 2 | 3 | | | | | | | | J Draper | 6 | 4 | 3 | | | | |
| | A Ramos Viñolas | 6 | 6$^7$ | 4 | | | | | | 4 | F Cerúndolo | 4 | 6 | 6 | | | | |
| | JP Varillas | 3 | 7$^9$ | 6 | | JP Varillas | 2 | 0$^r$ | | | | | | | | | | |
| | | | | | 4 | F Cerúndolo | 6 | 0 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 4 | F Cerúndolo | 6 | 6 |
| 6 | S Báez | 6 | 7$^7$ | | | | | | | | | | | | 2 | C Norrie | 3 | 0 |
| | M Fucsovics | 4 | 6$^5$ | | 6 | S Báez | 3 | 7 | 6 | | | | | | | | | |
| WC | G Monfils | 6 | 3 | 4 | | P Cachin | 6 | 5 | 2 | | | | | | | | | |
| | P Cachin | 2 | 6 | 6 | | | | | | 6 | S Báez | 2 | 6 | 1 | | | | |
| | D Goffin | 6 | 6 | | | | | | | 2 | C Norrie | 6 | 2 | 6 | | | | |
| Q | Á López San Martín | 1 | 3 | | | D Goffin | 3 | 4 | | | | | | | | | | |
| | | | | | 2 | C Norrie | 6 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

* Zhang Zhizhen (qualified)
* Hugo Grenier (first round)
* Dane Sweeny (first round)
* Pablo Llamas Ruiz (qualified)
* Hernán Casanova (first round)
* Manuel Guinard (first round)
* Oriol Roca Batalla (qualifying competition, lucky loser)
* Daniel Michalski (first round)

### Qualifiers

* Zhang Zhizhen
* Álvaro López San Martín
* Lloyd Harris
* Pablo Llamas Ruiz

### Lucky loser

* Oriol Roca Batalla

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Zhang Zhizhen | 7$^7$ | 6 | | | | | | |
| Alt | Maxime Janvier | 6$^4$ | 2 | | | | | | |
| Alt | Maxime Janvier | 6$^4$ | 2 | | 1 | Zhang Zhizhen | 6 | 6$^8$ | 6 |
| | | | | | 7 | Oriol Roca Batalla | 2 | 7$^{10}$ | 1 |
| WC | Kyrian Jacquet | 4 | 7 | 2 | 7 | Oriol Roca Batalla | 2 | 7$^{10}$ | 1 |
| 7 | Oriol Roca Batalla | 6 | 5 | 6 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Hugo Grenier | 3 | 1 | | | | |
| Alt | Ugo Blanchet | 6 | 6 | | | | |
| Alt | Ugo Blanchet | 6 | 6 | Alt | Ugo Blanchet | 3 | 3 |
| | | | | | Álvaro López San Martín | 6 | 6 |
| | Álvaro López San Martín | 6 | 6 | | Álvaro López San Martín | 6 | 6 |
| 5 | Hernán Casanova | 3 | 0 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Dane Sweeny | 4 | 1 | | | | |
| | Beibit Zhukayev | 6 | 6 | | | | |
| | Beibit Zhukayev | 6 | 6 | | Beibit Zhukayev | 3 | 2 |
| | | | | | Lloyd Harris | 6 | 6 |
| | Lloyd Harris | 3 | 6 | 6 | Lloyd Harris | 6 | 6 |
| 6 | Manuel Guinard | 6 | 4 | 1 | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Pablo Llamas Ruiz | 2 | 6 | 6 | | | | |
| Alt | Guido Andreozzi | 6 | 1 | 2 | | | | |
| Alt | Guido Andreozzi | 6 | 1 | 2 | 4 | Pablo Llamas Ruiz | 7$^9$ | 6 |
| | | | | | WC | Matteo Martineau | 6$^7$ | 3 |
| WC | Matteo Martineau | 6 | 6 | | WC | Matteo Martineau | 6$^7$ | 3 |
| 8 | Daniel Michalski | 3 | 4 | | | | | |