# 2023 Columbus Challenger – Singles

Jordan Thompson was the defending champion but chose not to defend his title.
Denis Kudla won the title after defeating Alexis Galarneau 6–2, 6–1 in the final.

## Seeds

* Enzo Couacaud (quarterfinals)
* Denis Kudla (champion)
* Emilio Gómez (first round)
* Vasek Pospisil (quarterfinals)
* Tennys Sandgren (second round)
* Alexis Galarneau (final)
* Adam Walton (second round)
* Zachary Svajda (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 |
| 6 | Alexis Galarneau | 6 | 7$^7$ | | | | |
| WC | Cannon Kingsley | 4 | 6$^2$ | | | | |
| WC | Cannon Kingsley | 4 | 6$^2$ | 6 | Alexis Galarneau | 2 | 1 |
| | | | | 2 | Denis Kudla | 6 | 6 |
| | Ryan Peniston | 5 | 2 | 2 | Denis Kudla | 6 | 6 |
| 2 | Denis Kudla | 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 | E Couacaud | 6 | 7 | | | | | | | | | | | | | | |
| Q | A Mayo | 2 | 5 | | 1 | E Couacaud | 7 | 6 | | | | | | | | | |
| Q | FA Gómez | 7 | 7$^7$ | | Q | FA Gómez | 5 | 4 | | | | | | | | | |
| | E Quinn | 5 | 6$^3$ | | | | | | | 1 | E Couacaud | 3 | 4 | | | | |
| Q | Jack Anthrop | 1 | 0 | | | | | | | 6 | A Galarneau | 6 | 6 | | | | |
| | L Lokoli | 6 | 6 | | | L Lokoli | 5 | 6$^5$ | | | | | | | | | |
| | JP Ficovich | 4 | 3 | | 6 | A Galarneau | 7 | 7$^7$ | | | | | | | | | |
| 6 | A Galarneau | 6 | 6 | | | | | | | | | | | 6 | A Galarneau | 6 | 7$^7$ |
| 3 | E Gómez | 0 | 6 | 3 | | | | | | | | | | WC | C Kingsley | 4 | 6$^2$ |
| Q | J Trotter | 6 | 4 | 6 | Q | J Trotter | 4 | 7$^7$ | 3 | | | | | | | | |
| WC | C Kingsley | 6 | 6 | | WC | C Kingsley | 6 | 6$^2$ | 6 | | | | | | | | |
| | A Ritschard | 1 | 4 | | | | | | | WC | C Kingsley | 7 | 6 | | | | |
| PR | C Harrison | 6 | 4 | | | | | | | PR | C Harrison | 5 | 4 | | | | |
| | A Dougaz | 1 | 0$^r$ | | PR | C Harrison | 6 | 7 | | | | | | | | | |
| | G Andreozzi | 1 | 4 | | 8 | Z Svajda | 4 | 5 | | | | | | | | | |
| 8 | Z Svajda | 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 |
| 5 | T Sandgren | 6 | 6 | | | | | | | | | | | | | | | |
| Alt | I Marchenko | 2 | 1 | | 5 | T Sandgren | 6$^0$ | 1 | | | | | | | | | | |
| | R Peniston | 3 | | | | R Peniston | 7$^7$ | 6 | | | | | | | | | | |
| Q | B Tomic | 1$^r$ | | | | | | | | | R Peniston | 7 | 3 | 6 | | | | |
| WC | J Tracy | 6 | 7 | | | | | | | 4 | V Pospisil | 5 | 6 | 4 | | | | |
| WC | J Boulais | 3 | 5 | | WC | J Tracy | 3 | 4 | | | | | | | | | | |
| | N Basavareddy | 5 | 6 | 5 | 4 | V Pospisil | 6 | 6 | | | | | | | | | | |
| 4 | V Pospisil | 7 | 2 | 7 | | | | | | | | | | | | R Peniston | 5 | 2 |
| 7 | A Walton | 7 | 6 | | | | | | | | | | | | 2 | D Kudla | 7 | 6 |
| | G Mpetshi Perricard | 5 | 4 | | 7 | A Walton | 6 | 3 | 1 | | | | | | | | | |
| Alt | T Schoolkate | 6 | 6 | | Alt | T Schoolkate | 4 | 6 | 6 | | | | | | | | | |
| | A Shelbayh | 4 | 3 | | | | | | | Alt | T Schoolkate | 2 | 4 | | | | | |
| | M Krueger | 5 | 2 | | | | | | | 2 | D Kudla | 6 | 6 | | | | | |
| Alt | M Geerts | 7 | 6 | | Alt | M Geerts | 5 | 6 | 3 | | | | | | | | | |
| Q | S Kirchheimer | 2 | 4 | | 2 | D Kudla | 7 | 3 | 6 | | | | | | | | | |
| 2 | D Kudla | 6 | 6 | | | | | | | | | | | | | | | |