2017 Busan Open – Singles
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Konstantin Kravchuk was the defending champion but lost in the first round to Kwon Soon-woo.
Vasek Pospisil won the title after defeating Go Soeda 6–1, 6–2 in the final.
Seeds
- Chinese Taipei Lu Yen-hsun (quarterfinals, retired)
- Canada Vasek Pospisil (champion)
- Slovenia Blaž Kavčič (second round)
- Israel Dudi Sela (semifinals)
- Ukraine Illya Marchenko (first round)
- Russia Konstantin Kravchuk (first round)
- Italy Thomas Fabbiano (first round)
- Belgium Ruben Bemelmans (first round)
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 | ||||||||||||
| South Korea Kwon Soon-woo | 4 | 2 | |||||||||||
| Japan Go Soeda | 6 | 6 | |||||||||||
| Japan Go Soeda | 1 | 2 | |||||||||||
| 2 | Canada Vasek Pospisil | 6 | 6 | ||||||||||
| 4 | Israel Dudi Sela | 4 | 3 | ||||||||||
| 2 | Canada Vasek Pospisil | 6 | 6 |
Top half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Chinese Taipei Y-h Lu | 6 | 6 | ||||||||||||||||||||||||
| Chinese Taipei T Chen | 4 | 4 | 1 | Chinese Taipei Y-h Lu | 4 | 6 | 6 | ||||||||||||||||||||
| Australia M Purcell | 63 | 6 | 3 | Q | United States R Sarmiento | 6 | 4 | 3 | |||||||||||||||||||
| Q | United States R Sarmiento | 77 | 1 | 6 | 1 | Chinese Taipei Y-h Lu | 5 | 0r | |||||||||||||||||||
| South Korea D-h Lee | 6 | 6 | South Korea S-w Kwon | 7 | 0 | ||||||||||||||||||||||
| United States A Sarkissian | 3 | 2 | South Korea D-h Lee | 79 | 62 | 4 | |||||||||||||||||||||
| South Korea S-w Kwon | 77 | 6 | South Korea S-w Kwon | 67 | 77 | 6 | |||||||||||||||||||||
| 6 | Russia K Kravchuk | 64 | 3 | South Korea S-w Kwon | 4 | 2 | |||||||||||||||||||||
| 3 | Slovenia B Kavčič | 6 | 62 | 7 | Japan G Soeda | 6 | 6 | ||||||||||||||||||||
| Alt | United States S Bangoura | 0 | 77 | 5 | 3 | Slovenia B Kavčič | 4 | 6 | 3 | ||||||||||||||||||
| WC | South Korea S-c Hong | 6 | 3 | 1 | Japan G Soeda | 6 | 0 | 6 | |||||||||||||||||||
| Japan G Soeda | 2 | 6 | 6 | Japan G Soeda | 3 | 6 | 6 | ||||||||||||||||||||
| Japan H Moriya | 6 | 6 | Australia M Ebden | 6 | 3 | 3 | |||||||||||||||||||||
| Q | United Kingdom E Corrie | 4 | 4 | Japan H Moriya | 3 | 2 | |||||||||||||||||||||
| Australia M Ebden | 6 | 6 | Australia M Ebden | 6 | 6 | ||||||||||||||||||||||
| 5 | Ukraine I Marchenko | 2 | 3 |
Bottom half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | Belgium R Bemelmans | 3 | 3 | ||||||||||||||||||||||||
| Q | United States A Krajicek | 6 | 6 | Q | United States A Krajicek | 6 | 6 | ||||||||||||||||||||
| United Kingdom B Klein | 6 | 6 | United Kingdom B Klein | 4 | 2 | ||||||||||||||||||||||
| Serbia M Tepavac | 3 | 0 | Q | United States A Krajicek | 4 | 2 | |||||||||||||||||||||
| WC | South Korea Oh Chan-yeong | 6 | 2 | 2 | 4 | Israel D Sela | 6 | 6 | |||||||||||||||||||
| France S Doumbia | 2 | 6 | 6 | France S Doumbia | 2 | 3 | |||||||||||||||||||||
| WC | Chinese Taipei T-l Wu | 1 | 6 | 5 | 4 | Israel D Sela | 6 | 6 | |||||||||||||||||||
| 4 | Israel D Sela | 6 | 2 | 7 | 4 | Israel D Sela | 4 | 3 | |||||||||||||||||||
| 7 | Italy T Fabbiano | 4 | 2 | 2 | Canada V Pospisil | 6 | 6 | ||||||||||||||||||||
| Japan T Ito | 6 | 6 | Japan T Ito | 6 | 1 | 6 | |||||||||||||||||||||
| Japan Yuya Kibi | 1 | 6 | 4 | WC | South Korea Ho Chung | 2 | 6 | 1 | |||||||||||||||||||
| WC | South Korea Ho Chung | 6 | 4 | 6 | Japan T Ito | 3 | 5 | ||||||||||||||||||||
| Q | United Kingdom L Broady | 6 | 6 | 2 | Canada V Pospisil | 6 | 7 | ||||||||||||||||||||
| PR | United Kingdom A Ward | 2 | 0 | Q | United Kingdom L Broady | 3 | 62 | ||||||||||||||||||||
| Switzerland M Chiudinelli | 2 | 5 | 2 | Canada V Pospisil | 6 | 77 | |||||||||||||||||||||
| 2 | Canada V Pospisil | 6 | 7 |