# 2023 Caribbean Open – Singles

This was the first edition of the tournament.
Kei Nishikori won the title after defeating Michael Zheng 6–2, 7–5 in the final in his first match since 2021. Nishikori became the first unranked player in history to win an ATP Challenger title.

## Seeds

* Wu Tung-lin (first round)
* Nicolas Moreno de Alboran (first round)
* Marc Polmans (first round)
* Antoine Escoffier (first round)
* Dane Sweeny (second round)
* Yuta Shimizu (first round)
* Mitchell Krueger (second round)
* Alexis Galarneau (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 | Semifinals | Final | Final | Final | Final |
| | Beibit Zhukayev | 6 | 3 | 6$^4$ | | | | |
| Q | Michael Zheng | 3 | 6 | 7$^7$ | | | | |
| Q | Michael Zheng | 3 | 6 | 7$^7$ | Q | Michael Zheng | 2 | 5 |
| | | | | | WC | Kei Nishikori | 6 | 7 |
| WC | Kei Nishikori | 6 | 6 | | WC | Kei Nishikori | 6 | 7 |
| Q | Gustavo Heide | 4 | 2 | | | | | |

### 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 | Semifinals |
| 1 | T-l Wu | 6 | 5 | 6$^4$ | | | | | | | | | | | | | | | |
| WC | L Draxl | 3 | 7 | 7$^7$ | WC | L Draxl | 7$^7$ | 6 | | | | | | | | | | | |
| Q | C Sinclair | 6 | 6 | | Q | C Sinclair | 6$^0$ | 3 | | | | | | | | | | | |
| WC | Alexander Bravo | 2 | 0 | | | | | | | WC | L Draxl | 4 | 3 | | | | | | |
| Q | E Zhu | 7$^7$ | 6 | | | | | | | | B Zhukayev | 6 | 6 | | | | | | |
| | V Durasovic | 6$^4$ | 4 | | Q | E Zhu | 6 | 5 | 2 | | | | | | | | | | |
| | B Zhukayev | 6 | 6 | | | B Zhukayev | 4 | 7 | 6 | | | | | | | | | | |
| 6 | Y Shimizu | 3 | 4 | | | | | | | | | | | | | B Zhukayev | 6 | 3 | 6$^4$ |
| 4 | A Escoffier | 6$^5$ | 4 | | | | | | | | | | | | Q | M Zheng | 3 | 6 | 7$^7$ |
| LL | M Copil | 7$^7$ | 6 | | LL | M Copil | 1 | 3 | | | | | | | | | | | |
| | S Diez | 3 | 0 | | Q | M Zheng | 6 | 6 | | | | | | | | | | | |
| Q | Michael Zheng | 6 | 6 | | | | | | | Q | M Zheng | 6 | 0 | 6 | | | | | |
| | D Yevseyev | 7 | 4 | 5 | | | | | | 8 | A Galarneau | 3 | 6 | 3 | | | | | |
| | JL Reis da Silva | 5 | 6 | 7 | | JL Reis da Silva | 6$^2$ | 0 | | | | | | | | | | | |
| | P Kypson | 3 | 0 | | 8 | A Galarneau | 7$^7$ | 6 | | | | | | | | | | | |
| 8 | A Galarneau | 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 |
| 7 | M Krueger | 4 | 6 | 6 | | | | | | | | | | | | | | |
| | P Gojowczyk | 6 | 4 | 4 | 7 | M Krueger | 6 | 3 | 2 | | | | | | | | | |
| | Christian Langmo | 2 | 4 | | WC | K Nishikori | 4 | 6 | 6 | | | | | | | | | |
| WC | K Nishikori | 6 | 6 | | | | | | | WC | K Nishikori | 6 | 6 | | | | | |
| PR | R Statham | 6 | 6$^4$ | 7 | | | | | | | A Walton | 4 | 2 | | | | | |
| Q | N Chappell | 1 | 7$^7$ | 5 | PR | R Statham | 2 | 0 | | | | | | | | | | |
| | A Walton | 7$^7$ | 6 | | | A Walton | 6 | 6 | | | | | | | | | | |
| 3 | M Polmans | 6$^1$ | 1 | | | | | | | | | | | | WC | K Nishikori | 6 | 6 |
| 5 | D Sweeny | 4 | 7 | 6 | | | | | | | | | | | Q | G Heide | 4 | 2 |
| | S Mansouri | 6 | 5 | 2 | 5 | D Sweeny | 4 | 6$^3$ | | | | | | | | | | |
| Q | B Tomic | 7$^9$ | 6 | | Q | B Tomic | 6 | 7$^7$ | | | | | | | | | | |
| PR | A Bolt | 6$^7$ | 4 | | | | | | | Q | B Tomic | 6$^3$ | 7$^7$ | 1 | | | | |
| Q | G Heide | 7$^7$ | 6 | | | | | | | Q | G Heide | 7$^7$ | 6$^5$ | 6 | | | | |
| | T Schoolkate | 6$^3$ | 3 | | Q | G Heide | 6 | 6 | | | | | | | | | | |
| LL | A Rybakov | 7$^7$ | 6 | | LL | A Rybakov | 3 | 4 | | | | | | | | | | |
| 2 | N Moreno de Alboran | 6$^4$ | 3 | | | | | | | | | | | | | | | |