| Singles | |
|---|---|
| 2024 Santaizi ATP Challenger | |
| Champion |  Adam Walton |
| Runner-up |  Illya Marchenko |
| Score | 3–6, 6–2, 7–6(7–3) |
Dennis Novak was the defending champion [1] 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. [2]
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)| Semifinals | Final | ||||||||||||
| Illya Marchenko | 0 | 77 | 6 | ||||||||||
 Hsu Yu-hsiou | 6 | 63 | 3 | ||||||||||
| Illya Marchenko | 6 | 2 | 63 | ||||||||||
| 3 | Adam Walton | 3 | 6 | 77 | |||||||||
| 3 | Adam Walton | 3 | 77 | 6 | |||||||||
| 2 | James Duckworth | 6 | 64 | 2 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Purcell | 63 | 6 | 6 | |||||||||||||||||||||||
| Q | J Trotter | 77 | 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 | 77 | I Marchenko | 6 | 6 | ||||||||||||||||||||||
| H Moriya | 3 | 64 | I Marchenko | 3 | 6 | 6 | |||||||||||||||||||||
 E Donskoy | 6 | 710 | E Donskoy | 6 | 3 | 4 | |||||||||||||||||||||
| 7 | O Jasika | 4 | 68 | I Marchenko | 0 | 77 | 6 | ||||||||||||||||||||
| 4 | Y Uchiyama | 65 | 3 | Y-h Hsu | 6 | 63 | 3 | ||||||||||||||||||||
| Y-h Hsu | 77 | 6 | Y-h Hsu | 6 | 6 | ||||||||||||||||||||||
| Q |  Alafia Ayeni | 62 | 3 | R Noguchi | 1 | 4 | |||||||||||||||||||||
| R Noguchi | 77 | 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 | 67 | 2 | 6 | S-c Hong | 6 | 6 | |||||||||||||||||||||
| 6 | S-c Hong | 79 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | A Escoffier | 6 | 4 | 77 | |||||||||||||||||||||||
| Alt | J McCabe | 1 | 6 | 64 | 8 | A Escoffier | 6 | 2 | 2 | ||||||||||||||||||
 R Berankis | 6 | 6 | R Berankis | 3 | 6 | 6 | |||||||||||||||||||||
| B Holt | 1 | 1 | R Berankis | 3 | 67 | ||||||||||||||||||||||
| Q | J-s Nam | 6 | 77 | 3 | A Walton | 6 | 79 | ||||||||||||||||||||
| Alt | Y-s Chung | 4 | 60 | Q | J-s Nam | 0 | 3 | ||||||||||||||||||||
| Y Shimizu | 65 | 0 | 3 | A Walton | 6 | 6 | |||||||||||||||||||||
| 3 | A Walton | 77 | 6 | 3 | A Walton | 3 | 77 | 6 | |||||||||||||||||||
| 5 | L Tu | 7 | 6 | 2 | J Duckworth | 6 | 64 | 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 | 62 | |||||||||||||||||||||
| Q | M Sasikumar | 3 | 4 | 2 | J Duckworth | 6 | 77 | ||||||||||||||||||||
| 2 | J Duckworth | 6 | 6 | ||||||||||||||||||||||||
Rafael Nadal defeated Novak Djokovic in the final, 7–6(8–6), 7–5 to win the singles tennis title at the 2008 Queen's Club Championships.
Rafael Nadal defeated Nicolas Kiefer in the final, 6–3, 6–2 to win the men's singles tennis title at the 2008 Canadian Open.
Novak Djokovic defeated Gaël Monfils in the final, 6–2, 5–7, 7–6(7–3) to win the singles tennis title at the 2009 Paris Masters. It was his first Paris Masters title, and the first of an eventual record seven titles at the event.
Sam Querrey defeated John Isner in the final, 3–6, 7–6(7–4), 6–4 to win the singles tennis title at the 2010 Serbia Open.
Ivan Ljubičić was the defending champion, and defended his title defeating Fernando González 6–3, 6–4, 7–5 in the final.
Andy Murray defeated John Isner in the final, 6–3, 6–7(4–7), 6–4 to win the singles tennis title at the 2016 Paris Masters. By reaching the final, Murray secured the world No. 1 ranking for the first time in his career.
Marin Čilić defeated Novak Djokovic in the final, 5–7, 7–6(7–4), 6–3 to win the singles tennis title at the 2018 Queen's Club Championships. He saved a championship point in the second set. This was Djokovic's first ATP Tour final in almost a year, and Čilić's second victory over Djokovic in their 16 matches played.
Prajnesh Gunneswaran was the defending champion but lost in the final to Jay Clarke.
Mats Moraing was the defending champion but chose not to defend his title.
Stuart Parker was the defending champion but lost in the qualifying competition to Giovanni Fonio.
Dennis Novak was the defending champion but lost in the semifinals to Arthur Cazaux.
Shang Juncheng was the defending champion but chose not to defend his title.
There was no defending champion as the previous edition of the tournament was canceled due to Hurricane Ian.
Alexander Ritschard was the defending champion but chose not to defend his title.
Treat Huey and Max Schnur were the defending champions but chose not to defend their title.
Omar Jasika was the defending champion but lost in the second round to Tristan Schoolkate.
Dominik Koepfer was the defending champion but chose not to defend his title.
Giovanni Mpetshi Perricard was the defending champion and successfully defended his title after defeating Adam Walton 6–3, 6–3 in the final.
James Duckworth was the defending champion but lost to Lloyd Harris 6–3, 6–3 in the final.
Térence Atmane was the defending champion but chose not to defend his title.