# 2024 Santaizi ATP Challenger – Singles

Dennis Novak was the defending champion but chose not to defend his title.
Adam Walton won the title after defeating Illya Marchenko 3–6, 6–2, 7–6$^{(7–3)}$ in the final.

## Seeds

* Max Purcell (quarterfinals)
* James Duckworth (semifinals)
* Adam Walton (champion)
* Yasutaka Uchiyama (first round)
* Li Tu (second round)
* Hong Seong-chan (quarterfinals)
* Omar Jasika (first round)
* Antoine Escoffier (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 | Semifinals | Final | Final | Final | Final | Final |
| | Illya Marchenko | 0 | 7$^7$ | 6 | | | | | |
| | Hsu Yu-hsiou | 6 | 6$^3$ | 3 | | | | | |
| | Hsu Yu-hsiou | 6 | 6$^3$ | 3 | | Illya Marchenko | 6 | 2 | 6$^3$ |
| | | | | | 3 | Adam Walton | 3 | 6 | 7$^7$ |
| 3 | Adam Walton | 3 | 7$^7$ | 6 | 3 | Adam Walton | 3 | 6 | 7$^7$ |
| 2 | James Duckworth | 6 | 6$^4$ | 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 |
| 1 | M Purcell | 6$^3$ | 6 | 6 | | | | | | | | | | | | | | |
| Q | J Trotter | 7$^7$ | 3 | 2 | 1 | M Purcell | 6 | 4 | 6 | | | | | | | | | |
| WC | R Ho | 3 | 1 | | Q | R Bertola | 3 | 6 | 4 | | | | | | | | | |
| Q | R Bertola | 6 | 6 | | | | | | | 1 | M Purcell | 4 | 3 | | | | | |
| | I Marchenko | 6 | 7$^7$ | | | | | | | | I Marchenko | 6 | 6 | | | | | |
| | H Moriya | 3 | 6$^4$ | | | I Marchenko | 3 | 6 | 6 | | | | | | | | | |
| | E Donskoy | 6 | 7$^{10}$ | | | E Donskoy | 6 | 3 | 4 | | | | | | | | | |
| 7 | O Jasika | 4 | 6$^8$ | | | | | | | | | | | | I Marchenko | 0 | 7$^7$ | 6 |
| 4 | Y Uchiyama | 6$^5$ | 3 | | | | | | | | | | | | Y-h Hsu | 6 | 6$^3$ | 3 |
| | Y-h Hsu | 7$^7$ | 6 | | | Y-h Hsu | 6 | 6 | | | | | | | | | | |
| Q | Alafia Ayeni | 6$^2$ | 3 | | | R Noguchi | 1 | 4 | | | | | | | | | | |
| | R Noguchi | 7$^7$ | 6 | | | | | | | | Y-h Hsu | 6 | 4 | 6 | | | | |
| Q | B Ellis | 6 | 6 | | | | | | | 6 | S-c Hong | 4 | 6 | 1 | | | | |
| WC | Huang Tsung-hao | 2 | 4 | | Q | B Ellis | 2 | 2 | | | | | | | | | | |
| | M Echargui | 6$^7$ | 2 | | 6 | S-c Hong | 6 | 6 | | | | | | | | | | |
| 6 | S-c Hong | 7$^9$ | 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 | Semifinals |
| 8 | A Escoffier | 6 | 4 | 7$^7$ | | | | | | | | | | | | | | |
| Alt | J McCabe | 1 | 6 | 6$^4$ | 8 | A Escoffier | 6 | 2 | 2 | | | | | | | | | |
| | R Berankis | 6 | 6 | | | R Berankis | 3 | 6 | 6 | | | | | | | | | |
| | B Holt | 1 | 1 | | | | | | | | R Berankis | 3 | 6$^7$ | | | | | |
| Q | J-s Nam | 6 | 7$^7$ | | | | | | | 3 | A Walton | 6 | 7$^9$ | | | | | |
| Alt | Y-s Chung | 4 | 6$^0$ | | Q | J-s Nam | 0 | 3 | | | | | | | | | | |
| | Y Shimizu | 6$^5$ | 0 | | 3 | A Walton | 6 | 6 | | | | | | | | | | |
| 3 | A Walton | 7$^7$ | 6 | | | | | | | | | | | 3 | A Walton | 3 | 7$^7$ | 6 |
| 5 | L Tu | 7 | 6 | | | | | | | | | | | 2 | J Duckworth | 6 | 6$^4$ | 2 |
| | P Sekulic | 5 | 2 | | 5 | L Tu | 4 | 4 | | | | | | | | | | |
| | A Fery | 6 | 7 | | | A Fery | 6 | 6 | | | | | | | | | | |
| | T-l Wu | 1 | 5 | | | | | | | | A Fery | 5 | 5 | | | | | |
| | R Ramanathan | 6 | 6 | | | | | | | 2 | J Duckworth | 7 | 7 | | | | | |
| WC | Yin Bang-shuo | 4 | 4 | | | R Ramanathan | 4 | 6$^2$ | | | | | | | | | | |
| Q | M Sasikumar | 3 | 4 | | 2 | J Duckworth | 6 | 7$^7$ | | | | | | | | | | |
| 2 | J Duckworth | 6 | 6 | | | | | | | | | | | | | | | |