# 2023 Fairfield Challenger – Singles

Michael Mmoh was the defending champion but chose not to defend his title.
Zachary Svajda won the title after defeating Nishesh Basavareddy 6–4, 6–1 in the final.

## Seeds

* Alex Michelsen (quarterfinals)
* Nicolas Moreno de Alboran (first round)
* Denis Kudla (first round)
* Zachary Svajda (champion)
* Alexis Galarneau (first round)
* Adam Walton (first round)
* Tennys Sandgren (second round)
* Alexander Ritschard (semifinals)

## 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 |
| | Nishesh Basavareddy | 3 | 7 | 6 | | | | |
| | Steve Johnson | 6 | 5 | 3 | | | | |
| | Steve Johnson | 6 | 5 | 3 | | Nishesh Basavareddy | 4 | 1 |
| | | | | | 4 | Zachary Svajda | 6 | 6 |
| 4 | Zachary Svajda | 6 | 6 | | 4 | Zachary Svajda | 6 | 6 |
| 8 | Alexander Ritschard | 3 | 1 | | | | | |

### 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 Michelsen | 2 | 7$^7$ | 6 | | | | | | | | | | | | | |
| | A Dougaz | 6 | 6$^5$ | 0 | 1 | A Michelsen | 6 | 6 | | | | | | | | | |
| WC | T-S Kwiatkowski | 6 | 6 | | WC | T-S Kwiatkowski | 3 | 4 | | | | | | | | | |
| WC | O Baris | 4 | 4 | | | | | | | 1 | A Michelsen | 3 | 3 | | | | |
| | E Spizzirri | 6 | 3 | 3 | | | | | | | N Basavareddy | 6 | 6 | | | | |
| LL | FA Gómez | 3 | 6 | 6 | LL | FA Gómez | 0 | 0$^r$ | | | | | | | | | |
| | N Basavareddy | 6 | 7 | | | N Basavareddy | 6 | 1 | | | | | | | | | |
| 6 | A Walton | 3 | 5 | | | | | | | | | | | N Basavareddy | 3 | 7 | 6 |
| 3 | D Kudla | 3 | 4 | | | | | | | | | | | S Johnson | 6 | 5 | 3 |
| | T Schoolkate | 6 | 6 | | | T Schoolkate | 6$^4$ | 3 | | | | | | | | | |
| | B Tomic | 3 | 6 | 1 | | S Johnson | 7$^7$ | 6 | | | | | | | | | |
| | S Johnson | 6 | 1 | 6 | | | | | | | S Johnson | 6 | 6 | | | | |
| PR | C Harrison | 6 | 6 | | | | | | | PR | C Harrison | 1 | 2 | | | | |
| Q | A Holmgren | 4 | 4 | | PR | C Harrison | 5 | 6 | 6 | | | | | | | | |
| | M Lajal | 6 | 6$^4$ | 1 | 7 | T Sandgren | 7 | 0 | 3 | | | | | | | | |
| 7 | T Sandgren | 1 | 7$^7$ | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | A Galarneau | 6$^9$ | 0 | | | | | | | | | | | | | | |
| | B Holt | 7$^{11}$ | 6 | | | B Holt | 6 | 5 | 7$^7$ | | | | | | | | |
| Alt | Christian Langmo | 6 | 6 | | Alt | C Langmo | 3 | 7 | 6$^3$ | | | | | | | | |
| Q | S Kirchheimer | 4 | 4 | | | | | | | | B Holt | 4 | 2 | | | | |
| Alt | S Mansouri | 1 | 6 | 6 | | | | | | 4 | Z Svajda | 6 | 6 | | | | |
| | V Pospisil | 6 | 1 | 3 | Alt | S Mansouri | 5 | 6 | 2 | | | | | | | | |
| Q | Stefan Dostanic | 3 | 7 | 6$^4$ | 4 | Z Svajda | 7 | 0 | 6 | | | | | | | | |
| 4 | Z Svajda | 6 | 5 | 7$^7$ | | | | | | | | | | 4 | Z Svajda | 6 | 6 |
| 8 | A Ritschard | 7$^7$ | 7$^7$ | | | | | | | | | | | 8 | A Ritschard | 3 | 1 |
| Q | K Smith | 6$^3$ | 6$^4$ | | 8 | A Ritschard | 7 | 6 | | | | | | | | | |
| | P Kypson | 6 | 6$^3$ | 6$^4$ | WC | A Mayo | 5 | 3 | | | | | | | | | |
| WC | A Mayo | 3 | 7$^7$ | 7$^7$ | | | | | | 8 | A Ritschard | 6 | 6 | | | | |
| | M Krueger | 7$^8$ | 6 | | | | | | | | M Krueger | 3 | 3 | | | | |
| Q | A Perez | 6$^6$ | 2 | | | M Krueger | 6 | 6 | | | | | | | | | |
| Q | L Tien | 6 | 6$^9$ | 6 | Q | L Tien | 4 | 3 | | | | | | | | | |
| 2 | N Moreno de Alboran | 2 | 7$^{11}$ | 4 | | | | | | | | | | | | | |