# 2024 Lexington Challenger – Men's singles

Steve Johnson was the defending champion but didn't defend his title as he had retired from professional tennis.
João Fonseca won the title after defeating Li Tu 6–1, 6–4 in the final.

## Seeds

* Bu Yunchaokete (withdrew)
* Emilio Nava (quarterfinals)
* Gabriel Diallo (quarterfinals)
* Coleman Wong (semifinals)
* Hugo Grenier (semifinals)
* João Fonseca (champion)
* Li Tu (final)
* Bernard Tomic (second round, withdrew)
* Brandon Holt (first round, retired)

## 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 |
| 5 | Hugo Grenier | 3 | 5 | | | | |
| 6 | João Fonseca | 6 | 7 | | | | |
| 6 | João Fonseca | 6 | 7 | 6 | João Fonseca | 6 | 6 |
| | | | | 7 | Li Tu | 1 | 4 |
| 4 | Coleman Wong | 2 | 3 | 7 | Li Tu | 1 | 4 |
| 7 | Li Tu | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 9 | B Holt | 3 | 0$^r$ | | | | | | | | | | | | | | | |
| | A Géa | 6 | 1 | | | A Géa | 6 | 6$^7$ | 0 | | | | | | | | | |
| | R Noguchi | 4 | 1 | | WC | L Tien | 4 | 7$^9$ | 6 | | | | | | | | | |
| WC | L Tien | 6 | 6 | | | | | | | WC | L Tien | 6 | 4 | 6$^7$ | | | | |
| | A Mayo | 5 | 7 | 3 | | | | | | 5 | H Grenier | 2 | 6 | 7$^9$ | | | | |
| Q | J Pinnington Jones | 7 | 5 | 0$^r$ | | A Mayo | 3 | 6 | 0 | | | | | | | | | |
| | A McHugh | 6 | 4 | 3 | 5 | H Grenier | 6 | 2 | 6 | | | | | | | | | |
| 5 | H Grenier | 2 | 6 | 6 | | | | | | | | | | | 5 | H Grenier | 3 | 5 |
| 3/SE | G Diallo | 7$^7$ | 3 | 6 | | | | | | | | | | | 6 | J Fonseca | 6 | 7 |
| Q | R Seggerman | 6$^3$ | 6 | 1 | 3/SE | G Diallo | 6 | 7$^8$ | | | | | | | | | | |
| Q | R Pacheco Méndez | 6 | 1 | 2 | | E Quinn | 3 | 6$^6$ | | | | | | | | | | |
| | E Quinn | 2 | 6 | 6 | | | | | | 3/SE | G Diallo | 2 | 2 | | | | | |
| | L Draxl | 6 | 4 | 6 | | | | | | 6 | J Fonseca | 6 | 6 | | | | | |
| | R Berankis | 4 | 6 | 2 | | L Draxl | 6$^3$ | 5 | | | | | | | | | | |
| | K Uchida | 3 | 3 | | 6 | J Fonseca | 7$^7$ | 7 | | | | | | | | | | |
| 6 | J Fonseca | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | B Tomic | 6 | 3 | 6 | | | | | | | | | | | | | |
| Q | S Kozlov | 4 | 6 | 3 | 8 | B Tomic | | | | | | | | | | | |
| WC | B Kuzuhara | 6$^4$ | 3 | | Q | M Braswell | w/o | | | | | | | | | | |
| Q | Micah Braswell | 7$^7$ | 6 | | | | | | | Q | M Braswell | 4 | 6$^3$ | | | | |
| LL | Y Shimizu | 6$^4$ | 6 | 6$^7$ | | | | | | 4 | C Wong | 6 | 7$^7$ | | | | |
| | A Andrade | 7$^7$ | 0 | 7$^9$ | | A Andrade | 6 | 1 | 2 | | | | | | | | |
| | M Soto | 4 | 6 | 3 | 4 | C Wong | 4 | 6 | 6 | | | | | | | | |
| 4 | C Wong | 6 | 3 | 6 | | | | | | | | | | 4 | C Wong | 2 | 3 |
| 7 | L Tu | 1 | 6 | 6 | | | | | | | | | | 7 | L Tu | 6 | 6 |
| WC | Taha Baadi | 6 | 2 | 4 | 7 | L Tu | 6 | 6 | | | | | | | | | |
| Q | J Trotter | 6 | 6 | | Q | J Trotter | 4 | 4 | | | | | | | | | |
| | T-l Wu | 3 | 4 | | | | | | | 7 | L Tu | 7$^7$ | 6 | | | | |
| Alt | O Kumar | 7 | 6 | | | | | | | 2 | E Nava | 6$^5$ | 3 | | | | |
| | C Broom | 5 | 3 | | Alt | O Kumar | 4 | 2 | | | | | | | | | |
| | L Saville | 3 | 2 | | 2 | E Nava | 6 | 6 | | | | | | | | | |
| 2 | E Nava | 6 | 6 | | | | | | | | | | | | | | |