| Singles | |
|---|---|
| 2023 Zhuhai Challenger | |
| Champion |  Arthur Weber |
| Runner-up |  Jason Jung |
| Score | 6–3, 5–7, 6–3 |
Enrique López Pérez was the defending champion [1] but was unable to defend his title as he was suspended from professional tennis for match fixing in 2020. [2]
Arthur Weber won the title after defeating Jason Jung 6–3, 5–7, 6–3 in the final.
Ričardas Berankis (second round) Jason Jung (final)
James McCabe (first round) Luke Saville (first round)
Dominik Palán (second round) Philip Sekulic (second round)
Filip Peliwo (first round)
Lý Hoàng Nam (first round)| Semifinals | Final | ||||||||||||
 Stefanos Sakellaridis | 6 | 4 | 2 | ||||||||||
| Arthur Weber | 4 | 6 | 6 | ||||||||||
| Arthur Weber | 6 | 5 | 6 | ||||||||||
| 2 | Jason Jung | 3 | 7 | 3 | |||||||||
| WC |  Li Zhe | 63 | 1 | ||||||||||
| 2 | Jason Jung | 77 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Berankis | 3 | 6 | 6 | |||||||||||||||||||||||
| Alt |  S Fomin | 6 | 0 | 3 | 1 | R Berankis | 62 | 6 | 1 | ||||||||||||||||||
| Q | Wang Xiaofei | 64 | 0 | S Sakellaridis | 77 | 3 | 6 | ||||||||||||||||||||
| S Sakellaridis | 77 | 6 | S Sakellaridis | 6 | 710 | ||||||||||||||||||||||
| WC | Y Zhou | 7 | 6 | WC | Y Zhou | 1 | 68 | ||||||||||||||||||||
 A Rai | 5 | 1 | WC | Y Zhou | 3 | 78 | 77 | ||||||||||||||||||||
| R Te | 3 | 77 | 4 | 6 | P Sekulic | 6 | 66 | 61 | |||||||||||||||||||
| 6 | P Sekulic | 6 | 63 | 6 | S Sakellaridis | 6 | 4 | 2 | |||||||||||||||||||
| 4 | L Saville | 65 | 3 | A Weber | 4 | 6 | 6 | ||||||||||||||||||||
| Q |  Aliaksandr Liaonenka | 77 | 6 | Q | A Liaonenka | 77 | 6 | ||||||||||||||||||||
 C Sinclair | 6 | 6 | C Sinclair | 64 | 3 | ||||||||||||||||||||||
 L Borg | 3 | 2 | Q | A Liaonenka | 4 | 5 | |||||||||||||||||||||
 Y Takahashi | 6 | 4 | 0r | A Weber | 6 | 7 | |||||||||||||||||||||
| Alt | A Zgirovsky | 4 | 6 | 1 | Alt | A Zgirovsky | 62 | 64 | |||||||||||||||||||
| A Weber | 6 | 6 | A Weber | 77 | 77 | ||||||||||||||||||||||
| 7 | F Peliwo | 3 | 3 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | NH Lý | 64 | 62 | ||||||||||||||||||||||||
| E Karlovskiy | 77 | 77 | E Karlovskiy | 77 | 3 | 6 | |||||||||||||||||||||
| Q |  L Castelnuovo | 64 | 77 | 77 | Q | L Castelnuovo | 62 | 6 | 1 | ||||||||||||||||||
 E Zhu | 77 | 65 | 64 | E Karlovskiy | 3 | 3 | |||||||||||||||||||||
| WC | Z Li | 6 | 6 | WC | Z Li | 6 | 6 | ||||||||||||||||||||
| Q | Mikalai Haliak | 3 | 0 | WC | Z Li | 4 | 6 | 6 | |||||||||||||||||||
| Q | H Li | 6 | 6 | Q | H Li | 6 | 2 | 2 | |||||||||||||||||||
| 3 | J McCabe | 2 | 3 | WC | Z Li | 63 | 1 | ||||||||||||||||||||
| 5 | Dominik Palán | 77 | 5 | 6 | 2 | J Jung | 77 | 6 | |||||||||||||||||||
| Q | Shuichi Sekiguchi | 60 | 7 | 2 | 5 | D Palán | 4 | 77 | 4 | ||||||||||||||||||
 R Strombachs | 6 | 3 | 6 | R Strombachs | 6 | 64 | 6 | ||||||||||||||||||||
| Mu Tao | 4 | 6 | 4 | R Strombachs | 4 | 2 | |||||||||||||||||||||
| R Statham | 3 | 4 | 2 | J Jung | 6 | 6 | |||||||||||||||||||||
| F Sun | 6 | 6 | F Sun | 3 | 6 | 64 | |||||||||||||||||||||
| WC | Y Bai | 2 | 3 | 2 | J Jung | 6 | 3 | 77 | |||||||||||||||||||
| 2 | J Jung | 6 | 6 | ||||||||||||||||||||||||
Dominic Thiem was the defending champion, but chose to compete in Kitzbühel instead.
This was the first edition of the tournament.
Novak Djokovic defeated Kevin Anderson in the final, 6–2, 6–2, 7–6(7–3) to win the gentlemen's singles tennis title at the 2018 Wimbledon Championships. It was his fourth Wimbledon title and 13th major title overall, passing Roy Emerson to outright fourth place on the all time men's singles major wins list. The win was also Djokovic's first title in over 12 months, his previous win having been at Eastbourne on July 1, 2017, and returned him to the top 10 in the rankings. The competition was contested by all but one of the top 20 male players at the time. Incidentally, this was the first and only time that an incumbent President and Vice President of the ATP Player Council faced each other in a final.
Scott Lipsky and Leander Paes were the defending champions but chose not to defend their title.
Ilya Ivashka was the defending champion but chose not to defend his title.
Wu Yibing was the defending champion but lost in the second round to Li Zhe.
Guillermo García López was the defending champion but chose not to defend his title.
Mikhail Youzhny was the defending champion but retired from professional tennis earlier in the year.
Prajnesh Gunneswaran was the defending champion but lost in the final to Jay Clarke.
Quentin Halys was the defending champion but chose not to defend his title.
Hugo Dellien was the defending champion but chose not to defend his title.
Félix Auger-Aliassime was the defending champion but chose not to defend his title.
Fabio Fognini was the defending champion, but lost in the quarterfinals to Taylor Fritz.
Bernard Tomic was the defending champion but chose not to defend his title.
The 2019 OEC Kaohsiung-Singles was a men's tennis tournament held from September 16 to September 22, 2019, at Kaohsiung, Taiwan. Gaël Monfils was the defending champion but chose not to defend his title.
Bernard Tomic was the defending champion, but retired in the first round of the qualifying tournament against Denis Istomin.
Thomas Fabbiano was the defending champion but chose not to defend his title.
Radu Albot was the defending champion but chose not to defend his title.
Miomir Kecmanović was the defending champion but chose not to defend his title.
Matteo Berrettini defeated Cameron Norrie in the final, 6–4, 6–7(5–7), 6–3, to win the singles tennis title at the 2021 Queen's Club Championships. Berrettini's win earned him his fourth career ATP Tour singles title, his first ATP 500 victory, and also made him the first player to win the tournament on their main draw debut since Boris Becker in 1985. Norrie was contesting for his first title in his fourth career final.