# 2023 Golden Gate Open – Men's singles

This was the first edition of the tournament.
Constant Lestienne won the title after defeating Emilio Nava 7–6$^{(7–4)}$, 6–2 in the final.

## Seeds

* Arthur Rinderknech (withdrew)
* Yosuke Watanuki (semifinals, withdrew)
* Michael Mmoh (quarterfinals)
* Constant Lestienne (champion)
* Borna Gojo (quarterfinals)
* James Duckworth (quarterfinals)
* Aleksandar Kovacevic (quarterfinals)
* Thiago Agustín Tirante (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 |
| Q | Emilio Nava | 2 | 7$^7$ | 6 | | | | |
| Q | Tristan Boyer | 6 | 6$^4$ | 1 | | | | |
| Q | Tristan Boyer | 6 | 6$^4$ | 1 | Q | Emilio Nava | 6$^4$ | 2 |
| | | | | | 4 | Constant Lestienne | 7$^7$ | 6 |
| 4 | Constant Lestienne | w/o | | | 4 | Constant Lestienne | 7$^7$ | 6 |
| 2 | Yosuke Watanuki | | | | | | | |

### 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 | Semifinals | Semifinals |
| LL | Colin Markes | 6 | 3 | 4 | | | | | | | | | | | | | |
| | F Gaio | 3 | 6 | 6 | | F Gaio | 4 | 4 | | | | | | | | | |
| WC | E Quinn | 1 | 2 | | Q | Em Nava | 6 | 6 | | | | | | | | | |
| Q | Em Nava | 6 | 6 | | | | | | Q | Em Nava | 7$^7$ | 7$^7$ | | | | | |
| | A Andreev | 5 | 6 | 6 | | | | | 7 | A Kovacevic | 6$^2$ | 6$^4$ | | | | | |
| WC | S Banerjee | 7 | 2 | 4 | | A Andreev | 5 | 3 | | | | | | | | | |
| | D Kudla | 3 | 2 | | 7 | A Kovacevic | 7 | 6 | | | | | | | | | |
| 7 | A Kovacevic | 6 | 6 | | | | | | | | | | Q | Em Nava | 2 | 7$^7$ | 6 |
| 3 | M Mmoh | 6 | 6 | | | | | | | | | | Q | T Boyer | 6 | 6$^4$ | 1 |
| Q | M Krueger | 2 | 3 | | 3 | M Mmoh | 6 | 6 | | | | | | | | | |
| | D Svrčina | 6 | 6 | | | D Svrčina | 4 | 3 | | | | | | | | | |
| Q | J Jung | 4 | 2 | | | | | | 3 | M Mmoh | 5 | 6$^5$ | | | | | |
| Q | T Boyer | 6 | 7$^7$ | | | | | | Q | T Boyer | 7 | 7$^7$ | | | | | |
| PR | B Klahn | 3 | 6$^2$ | | Q | T Boyer | 7 | 7$^{10}$ | | | | | | | | | |
| | S Shimabukuro | 6 | 6 | | | S Shimabukuro | 5 | 6$^8$ | | | | | | | | | |
| 8 | TA Tirante | 1 | 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 | B Gojo | 7 | 7$^7$ | | | | | | | | | | | | | |
| Alt | M Kukushkin | 5 | 6$^1$ | | 5 | B Gojo | 4 | 6 | 7$^7$ | | | | | | | |
| | A Michelsen | 4 | 6 | 6 | | A Michelsen | 6 | 4 | 6$^3$ | | | | | | | |
| | S-c Hong | 6 | 2 | 0 | | | | | | 5 | B Gojo | 2 | 2 | | | |
| WC | F Verdasco | 1 | 3 | | | | | | | 4 | C Lestienne | 6 | 6 | | | |
| Q | A Cozbinov | 6 | 6 | | Q | A Cozbinov | 2 | 2 | | | | | | | | |
| Alt | D Sweeny | 6 | 6$^6$ | 6$^{12}$ | 4 | C Lestienne | 6 | 6 | | | | | | | | |
| 4 | C Lestienne | 2 | 7$^8$ | 7$^{14}$ | | | | | | | | | | 4 | C Lestienne | w/o |
| 6 | J Duckworth | 6 | 6 | | | | | | | | | | | 2 | Y Watanuki | |
| | GA Olivieri | 2 | 3 | | 6 | J Duckworth | 6 | 6 | | | | | | | | |
| Alt | Z Svajda | 2 | 2 | | SE | A Walton | 3 | 4 | | | | | | | | |
| SE | A Walton | 6 | 6 | | | | | | | 6 | J Duckworth | 1 | 3 | | | |
| Q | N Chappell | 6 | 3 | 4 | | | | | | 2 | Y Watanuki | 6 | 6 | | | |
| | N Moreno de Alboran | 3 | 6 | 6 | | N Moreno de Alboran | 5 | 3 | | | | | | | | |
| | S Johnson | 5 | 7 | 4 | 2 | Y Watanuki | 7 | 6 | | | | | | | | |
| 2 | Y Watanuki | 7 | 5 | 6 | | | | | | | | | | | | |