| Singles | |
|---|---|
| 2024 Busan Open | |
| Champion |  Yasutaka Uchiyama |
| Runner-up |  Hong Seong-chan |
| Score | 7–6(7–4), 6–3 |
Aleksandar Vukic was the defending champion [1] but chose not to defend his title.
Yasutaka Uchiyama won the title after defeating Hong Seong-chan 7–6(7–4), 6–3 in the final. [2]
James Duckworth (semifinals)
Otto Virtanen (first round) Sho Shimabukuro (first round)
Mattia Bellucci (first round)
Bu Yunchaokete (first round)
Lloyd Harris (quarterfinals) Li Tu (first round)
Coleman Wong (quarterfinals)| Semifinals | Final | ||||||||||||
| 1 | James Duckworth | 3 | 6 | 64 | |||||||||
| Yasutaka Uchiyama | 6 | 4 | 77 | ||||||||||
| Yasutaka Uchiyama | 77 | 6 | |||||||||||
| Hong Seong-chan | 64 | 3 | |||||||||||
| WC | Kwon Soon-woo | ||||||||||||
| Hong Seong-chan | w/o | ||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | J Duckworth | 6 | 6 | ||||||||||||||||||||||||
| WC | Roh Ho-young | 3 | 3 | 1 | J Duckworth | 4 | 6 | 6 | |||||||||||||||||||
 A Fery | 6 | 6 | A Fery | 6 | 1 | 4 | |||||||||||||||||||||
 Jules Marie | 2 | 1 | 1 | J Duckworth | 77 | 3 | 6 | ||||||||||||||||||||
 I Marchenko | 6 | 77 | I Marchenko | 65 | 6 | 3 | |||||||||||||||||||||
| A Bolt | 1 | 61 | I Marchenko | 6 | 6 | ||||||||||||||||||||||
| Q | R Noguchi | 7 | 7 | Q | R Noguchi | 2 | 3 | ||||||||||||||||||||
| 5 | Y Bu | 5 | 5 | 1 | J Duckworth | 3 | 6 | 64 | |||||||||||||||||||
| 3 | S Shimabukuro | 3 | 0 | Y Uchiyama | 6 | 4 | 77 | ||||||||||||||||||||
| Y Uchiyama | 6 | 6 | Y Uchiyama | 6 | 4 | 6 | |||||||||||||||||||||
| Q |  Y Erel | 6 | 4 | 4 | D Sweeny | 2 | 6 | 1 | |||||||||||||||||||
| D Sweeny | 4 | 6 | 6 | Y Uchiyama | 4 | 7 | 6 | ||||||||||||||||||||
 Y-h Hsu | 4 | 3 | Q | P Jubb | 6 | 5 | 3 | ||||||||||||||||||||
| T-l Wu | 6 | 6 | T-l Wu | 4 | 61 | ||||||||||||||||||||||
| Q | P Jubb | 77 | 6 | Q | P Jubb | 6 | 77 | ||||||||||||||||||||
| 7 | L Tu | 63 | 1 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | L Harris | 6 | 6 | ||||||||||||||||||||||||
 R Berankis | 3 | 1 | 6 | L Harris | 6 | 77 | |||||||||||||||||||||
| P Sekulic | 6 | 6 | P Sekulic | 4 | 63 | ||||||||||||||||||||||
| WC | J-s Nam | 1 | 4 | 6 | L Harris | 65 | 5 | ||||||||||||||||||||
| Q | A Çelikbilek | 4 | 6 | 3 | WC | S-w Kwon | 77 | 7 | |||||||||||||||||||
 A Kachmazov | 6 | 4 | 6 | A Kachmazov | 4 | 3 | |||||||||||||||||||||
| WC | S-w Kwon | 6 | 6 | WC | S-w Kwon | 6 | 6 | ||||||||||||||||||||
| 4 | M Bellucci | 4 | 3 | WC | S-w Kwon | ||||||||||||||||||||||
| 8 | C Wong | 6 | 6 | S-c Hong | w/o | ||||||||||||||||||||||
 A Blockx | 3 | 3 | 8 | C Wong | 7 | 6 | |||||||||||||||||||||
| Q | B Ellis | 61 | 6 | 77 | Q | B Ellis | 5 | 2 | |||||||||||||||||||
| A Escoffier | 77 | 3 | 64 | 8 | C Wong | 4 | 6 | 2 | |||||||||||||||||||
| Q | Y-s Chung | 3 | 2 | S-c Hong | 6 | 3 | 6 | ||||||||||||||||||||
 M Lajal | 6 | 6 | M Lajal | 4 | 4 | ||||||||||||||||||||||
| S-c Hong | 6 | 6 | S-c Hong | 6 | 6 | ||||||||||||||||||||||
| 2 | O Virtanen | 2 | 2 | ||||||||||||||||||||||||
Sebastian Ofner was the defending champion but lost in the third round to Aleksandar Vukic.
Blaž Kavčič was the defending champion but chose not to defend his title.
Jordan Thompson was the defending champion but chose not to defend his title.
Rogério Dutra Silva 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.
J. J. Wolf was the defending champion but lost in the semifinals to Stefan Kozlov.
James Duckworth was the defending champion but chose not to defend his title.
Tseng Chun-hsin was the defending champion but lost in the first round to Markos Kalovelonis.
Benjamin Bonzi was the defending champion but chose not to defend his title.
The men's singles of the 2022 I.ČLTK Prague Open tournament took place on clay in Prague, Czech Republic.
Yoshihito Nishioka was the defending champion but chose not to defend his title.
James Duckworth was the defending champion but lost in the quarterfinals to Rinky Hijikata.
Arthur Rinderknech was the defending champion but chose not to defend his title.
Stefan Kozlov was the defending champion but lost in the first round to Prajnesh Gunneswaran.
Tseng Chun-hsin was the defending champion but chose not to defend his title.
Aleksandar Vukic was the defending champion but chose not to defend his title.
Li Tu was the defending champion but lost in the first round to Emilio Gómez.
Kamil Majchrzak was the defending champion but chose not to defend his title.
Zsombor Piros was the defending champion but chose not to defend his title.
Alejandro Tabilo won the singles title at the 2024 Open Aix Provence after defeating Jaume Munar 6–3, 6–2 in the final.