# 2023 Lexington Challenger – Men's singles

Shang Juncheng was the defending champion but chose not to defend his title.
Steve Johnson won the title after defeating Arthur Cazaux 7–6$^{(7–5)}$, 6–4 in the final.

## Seeds

* Arthur Cazaux (final)
* Steve Johnson (champion)
* Wu Tung-lin (quarterfinals)
* Hong Seong-chan (quarterfinals)
* Tennys Sandgren (semifinals)
* Dane Sweeny (second round)
* Adam Walton (second round)
* Tristan Schoolkate (second 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 | Final | Final | Final | Final |
| 1 | Arthur Cazaux | 6 | 7$^8$ | | | | |
| WC | Cannon Kingsley | 2 | 6$^6$ | | | | |
| WC | Cannon Kingsley | 2 | 6$^6$ | 1 | Arthur Cazaux | 6$^5$ | 4 |
| | | | | 2 | Steve Johnson | 7$^7$ | 6 |
| 5 | Tennys Sandgren | 6$^1$ | 3 | 2 | Steve Johnson | 7$^7$ | 6 |
| 2 | Steve Johnson | 7$^7$ | 6 | | | | |

### 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 |
| 1 | A Cazaux | 7 | 4 | 6 | | | | | | | | | | | | | |
| Q | J Boulais | 5 | 6 | 4 | 1 | A Cazaux | 6 | 6 | | | | | | | | | |
| | R Peniston | 5 | 2 | | | O Jasika | 2 | 3 | | | | | | | | | |
| | O Jasika | 7 | 6 | | | | | | | 1 | A Cazaux | 6 | 6 | | | | |
| Alt | Nathan Ponwith | 4 | 1 | | | | | | | Q | A Mayo | 1 | 4 | | | | |
| Q | A Mayo | 6 | 6 | | Q | A Mayo | 3 | 6 | 6 | | | | | | | | |
| Q | P Sekulic | 6 | 6$^3$ | 1 | 8 | T Schoolkate | 6 | 4 | 3 | | | | | | | | |
| 8 | T Schoolkate | 3 | 7$^7$ | 6 | | | | | | | | | | 1 | A Cazaux | 6 | 7$^8$ |
| 3 | T-l Wu | 6 | 6 | | | | | | | | | | | WC | C Kingsley | 2 | 6$^6$ |
| | Christian Langmo | 4 | 4 | | 3 | T-l Wu | 6 | 7$^7$ | | | | | | | | | |
| | AD Vallejo | 6 | 4 | 6 | | AD Vallejo | 4 | 6$^4$ | | | | | | | | | |
| | A Bolt | 4 | 6 | 1 | | | | | | 3 | T-l Wu | 3 | 2 | | | | |
| WC | C Kingsley | 6 | 4 | 6 | | | | | | WC | C Kingsley | 6 | 6 | | | | |
| Q | Yuki Mochizuki | 4 | 6 | 3 | WC | C Kingsley | 6 | 7 | | | | | | | | | |
| Q | T Boyer | 3 | 4 | | 6 | D Sweeny | 4 | 5 | | | | | | | | | |
| 6 | D Sweeny | 6 | 6 | | | | | | | | | | | | | | |

### Bottom 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 |
| 5 | T Sandgren | 7 | 6 | | | | | | | | | | | | | |
| WC | Joshua Lapadat | 5 | 3 | | 5 | T Sandgren | 6 | 6 | | | | | | | | |
| | S Kirchheimer | 6$^4$ | 7$^7$ | 7$^7$ | | S Kirchheimer | 2 | 4 | | | | | | | | |
| WC | M Damm | 7$^7$ | 6$^5$ | 6$^4$ | | | | | 5 | T Sandgren | 6 | 6 | | | | |
| | B Tomic | 6 | 2 | 6 | | | | | 4 | S-c Hong | 4 | 2 | | | | |
| Q | Stefan Dostanic | 4 | 6 | 1 | | B Tomic | 1 | 2 | | | | | | | | |
| | NH Lý | 1 | 5 | | 4 | S-c Hong | 6 | 6 | | | | | | | | |
| 4 | S-c Hong | 6 | 7 | | | | | | | | | | 5 | T Sandgren | 6$^1$ | 3 |
| 7 | A Walton | 4 | 6 | 6 | | | | | | | | | 2 | S Johnson | 7$^7$ | 6 |
| | M Janvier | 6 | 3 | 3 | 7 | A Walton | 3 | 3 | | | | | | | | |
| | A McHugh | 6$^2$ | 4 | | Alt | U Blanch | 6 | 6 | | | | | | | | |
| Alt | U Blanch | 7$^7$ | 6 | | | | | | Alt | U Blanch | 3 | 4 | | | | |
| | E Spizzirri | 7$^7$ | 6 | | | | | | 2 | S Johnson | 6 | 6 | | | | |
| PR | C Harrison | 6$^4$ | 4 | | | E Spizzirri | 3 | 5 | | | | | | | | |
| | B Harris | 6$^5$ | 4 | | 2 | S Johnson | 6 | 7 | | | | | | | | |
| 2 | S Johnson | 7$^7$ | 6 | | | | | | | | | | | | | |