# 2023 Mexico City Open – Singles

Marc-Andrea Hüsler was the defending champion but lost in the second round to Federico Gaio.
Dominik Koepfer won the title after defeating Thiago Agustín Tirante 2–6, 6–4, 6–2 in the final.

## Seeds

* Marc-Andrea Hüsler (second round)
* Daniel Elahi Galán (second round)
* Facundo Bagnis (first round)
* James Duckworth (second round)
* Yannick Hanfmann (first round)
* Alejandro Tabilo (second round)
* Felipe Meligeni Alves (second round)
* Luciano Darderi (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 | Semifinals | Final | Final | Final | Final | Final |
| Q | Dominik Koepfer | 6 | 6 | | | | | | |
| Q | Maximilian Neuchrist | 2 | 4 | | | | | | |
| Q | Maximilian Neuchrist | 2 | 4 | | Q | Dominik Koepfer | 2 | 6 | 6 |
| | | | | | Alt | Thiago Agustín Tirante | 6 | 4 | 2 |
| Alt | Thiago Agustín Tirante | 7$^7$ | 4 | 6 | Alt | Thiago Agustín Tirante | 6 | 4 | 2 |
| | Jan Choinski | 6$^5$ | 6 | 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 | M-A Hüsler | 6 | 7 | | | | | | | | | | | | | | | |
| | F Mena | 4 | 5 | | 1 | M-A Hüsler | 6 | 0 | 3 | | | | | | | | | |
| Q | F Gaio | 7$^7$ | 3 | 7$^7$ | Q | F Gaio | 3 | 6 | 6 | | | | | | | | | |
| Q | JI Londero | 6$^5$ | 6 | 6$^5$ | | | | | | Q | F Gaio | 4 | 6 | 6$^5$ | | | | |
| | R Noguchi | 3 | 2 | | | | | | | Q | D Koepfer | 6 | 4 | 7$^7$ | | | | |
| Q | D Koepfer | 6 | 6 | | Q | D Koepfer | 4 | 6 | 7 | | | | | | | | | |
| | T Barrios Vera | 6 | 7 | | | T Barrios Vera | 6 | 4 | 5 | | | | | | | | | |
| 5 | Y Hanfmann | 3 | 5 | | | | | | | | | | | | Q | D Koepfer | 6 | 6 |
| 3 | F Bagnis | 3 | 4 | | | | | | | | | | | | Q | M Neuchrist | 2 | 4 |
| | N Moreno de Alboran | 6 | 6 | | | N Moreno de Alboran | 4 | 7 | 4 | | | | | | | | | |
| Q | Elmar Ejupovic | 7$^{10}$ | 6$^5$ | 2 | | A Bellier | 6 | 5 | 6 | | | | | | | | | |
| | A Bellier | 6$^8$ | 7$^7$ | 6 | | | | | | | A Bellier | 6$^4$ | 6$^5$ | | | | | |
| | M Krueger | 4 | 6 | 1 | | | | | | Q | M Neuchrist | 7$^7$ | 7$^7$ | | | | | |
| Q | M Neuchrist | 6 | 1 | 6 | Q | M Neuchrist | 7$^7$ | 7$^7$ | | | | | | | | | | |
| | JP Ficovich | 3 | 3 | | 7 | F Meligeni Alves | 6$^2$ | 6$^5$ | | | | | | | | | | |
| 7 | F Meligeni Alves | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | L Darderi | 4 | 4 | | | | | | | | | | | | | | | | |
| | R Olivo | 6 | 6 | | | R Olivo | 7$^{11}$ | 4 | 3 | | | | | | | | | | |
| WC | B Tomic | 2 | 2 | | Alt | TA Tirante | 6$^9$ | 6 | 6 | | | | | | | | | | |
| Alt | TA Tirante | 6 | 6 | | | | | | | Alt | TA Tirante | 6 | 3 | 7$^7$ | | | | | |
| | GA Olivieri | 2 | 0 | | | | | | | WC | N Mejía | 1 | 6 | 6$^4$ | | | | | |
| WC | N Mejía | 6 | 6 | | WC | N Mejía | 6 | 5 | 7$^7$ | | | | | | | | | | |
| WC | R Pacheco Méndez | 2 | 5 | | 4 | J Duckworth | 2 | 7 | 6$^5$ | | | | | | | | | | |
| 4 | J Duckworth | 6 | 7 | | | | | | | | | | | | Alt | TA Tirante | 7$^7$ | 4 | 6 |
| 6 | A Tabilo | 7 | 6 | | | | | | | | | | | | | J Choinski | 6$^5$ | 6 | 4 |
| | S-c Hong | 5 | 3 | | 6 | A Tabilo | 5 | 6 | 4 | | | | | | | | | | |
| | E Couacaud | 6$^4$ | 7 | 6 | | E Couacaud | 7 | 3 | 6 | | | | | | | | | | |
| | N Hardt | 7$^7$ | 5 | 3 | | | | | | | E Couacaud | 1 | 2 | | | | | | |
| | J Choinski | 6 | 6 | | | | | | | | J Choinski | 6 | 6 | | | | | | |
| | A Galarneau | 2 | 2 | | | J Choinski | 4 | 6 | 6 | | | | | | | | | | |
| Q | T Atmane | 3 | 4 | | 2 | DE Galán | 6 | 3 | 2 | | | | | | | | | | |
| 2 | DE Galán | 6 | 6 | | | | | | | | | | | | | | | | |