2024 Busan Open – Singles
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Aleksandar Vukic was the defending champion 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.
Seeds
- Australia James Duckworth (semifinals)
- Finland Otto Virtanen (first round)
- Japan Sho Shimabukuro (first round)
- Italy Mattia Bellucci (first round)
- China Bu Yunchaokete (first round)
- South Africa Lloyd Harris (quarterfinals)
- Australia Li Tu (first round)
- Hong Kong Coleman Wong (quarterfinals)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
Finals
| Semifinals | Final | ||||||||||||
| 1 | Australia James Duckworth | 3 | 6 | 64 | |||||||||
| Japan Yasutaka Uchiyama | 6 | 4 | 77 | ||||||||||
| Japan Yasutaka Uchiyama | 77 | 6 | |||||||||||
| South Korea Hong Seong-chan | 64 | 3 | |||||||||||
| WC | South Korea Kwon Soon-woo | ||||||||||||
| South Korea Hong Seong-chan | w/o |
Top half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Australia J Duckworth | 6 | 6 | ||||||||||||||||||||||||
| WC | South Korea Roh Ho-young | 3 | 3 | 1 | Australia J Duckworth | 4 | 6 | 6 | |||||||||||||||||||
| United Kingdom A Fery | 6 | 6 | United Kingdom A Fery | 6 | 1 | 4 | |||||||||||||||||||||
| France Jules Marie | 2 | 1 | 1 | Australia J Duckworth | 77 | 3 | 6 | ||||||||||||||||||||
| Ukraine I Marchenko | 6 | 77 | Ukraine I Marchenko | 65 | 6 | 3 | |||||||||||||||||||||
| Australia A Bolt | 1 | 61 | Ukraine I Marchenko | 6 | 6 | ||||||||||||||||||||||
| Q | Japan R Noguchi | 7 | 7 | Q | Japan R Noguchi | 2 | 3 | ||||||||||||||||||||
| 5 | China Y Bu | 5 | 5 | 1 | Australia J Duckworth | 3 | 6 | 64 | |||||||||||||||||||
| 3 | Japan S Shimabukuro | 3 | 0 | Japan Y Uchiyama | 6 | 4 | 77 | ||||||||||||||||||||
| Japan Y Uchiyama | 6 | 6 | Japan Y Uchiyama | 6 | 4 | 6 | |||||||||||||||||||||
| Q | Turkey Y Erel | 6 | 4 | 4 | Australia D Sweeny | 2 | 6 | 1 | |||||||||||||||||||
| Australia D Sweeny | 4 | 6 | 6 | Japan Y Uchiyama | 4 | 7 | 6 | ||||||||||||||||||||
| Chinese Taipei Y-h Hsu | 4 | 3 | Q | United Kingdom P Jubb | 6 | 5 | 3 | ||||||||||||||||||||
| Chinese Taipei T-l Wu | 6 | 6 | Chinese Taipei T-l Wu | 4 | 61 | ||||||||||||||||||||||
| Q | United Kingdom P Jubb | 77 | 6 | Q | United Kingdom P Jubb | 6 | 77 | ||||||||||||||||||||
| 7 | Australia L Tu | 63 | 1 |
Bottom half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | South Africa L Harris | 6 | 6 | ||||||||||||||||||||||||
| Lithuania R Berankis | 3 | 1 | 6 | South Africa L Harris | 6 | 77 | |||||||||||||||||||||
| Australia P Sekulic | 6 | 6 | Australia P Sekulic | 4 | 63 | ||||||||||||||||||||||
| WC | South Korea J-s Nam | 1 | 4 | 6 | South Africa L Harris | 65 | 5 | ||||||||||||||||||||
| Q | Turkey A Çelikbilek | 4 | 6 | 3 | WC | South Korea S-w Kwon | 77 | 7 | |||||||||||||||||||
| A Kachmazov | 6 | 4 | 6 | A Kachmazov | 4 | 3 | |||||||||||||||||||||
| WC | South Korea S-w Kwon | 6 | 6 | WC | South Korea S-w Kwon | 6 | 6 | ||||||||||||||||||||
| 4 | Italy M Bellucci | 4 | 3 | WC | South Korea S-w Kwon | ||||||||||||||||||||||
| 8 | Hong Kong C Wong | 6 | 6 | South Korea S-c Hong | w/o | ||||||||||||||||||||||
| Belgium A Blockx | 3 | 3 | 8 | Hong Kong C Wong | 7 | 6 | |||||||||||||||||||||
| Q | Australia B Ellis | 61 | 6 | 77 | Q | Australia B Ellis | 5 | 2 | |||||||||||||||||||
| France A Escoffier | 77 | 3 | 64 | 8 | Hong Kong C Wong | 4 | 6 | 2 | |||||||||||||||||||
| Q | South Korea Y-s Chung | 3 | 2 | South Korea S-c Hong | 6 | 3 | 6 | ||||||||||||||||||||
| Estonia M Lajal | 6 | 6 | Estonia M Lajal | 4 | 4 | ||||||||||||||||||||||
| South Korea S-c Hong | 6 | 6 | South Korea S-c Hong | 6 | 6 | ||||||||||||||||||||||
| 2 | Finland O Virtanen | 2 | 2 |