# 2022 Busan Open – Singles

Ričardas Berankis was the defending champion but chose not to defend his title.
Kamil Majchrzak won the title after defeating Radu Albot 6–4, 3–6, 6–2 in the final.

## Seeds

* Kwon Soon-woo (quarterfinals)
* Radu Albot (final)
* Tseng Chun-hsin (first round)
* Emilio Gómez (withdrew)
* Christopher O'Connell (semifinals)
* Kamil Majchrzak (champion)
* James Duckworth (first round)
* John Millman (quarterfinals)
* Christopher Eubanks (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 6 | Kamil Majchrzak | 7$^7$ | 6 | | | | | |
| 5 | Christopher O'Connell | 6$^3$ | 4 | | | | | |
| 5 | Christopher O'Connell | 6$^3$ | 4 | 6 | Kamil Majchrzak | 6 | 3 | 6 |
| | | | | 2 | Radu Albot | 4 | 6 | 2 |
| LL | Hong Seong-chan | 6$^2$ | 3 | 2 | Radu Albot | 4 | 6 | 2 |
| 2 | Radu Albot | 7$^7$ | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1/WC | S-w Kwon | 6 | 6 | | | | | | | | | | | | | | |
| Q | M Neuchrist | 4 | 2 | | 1/WC | S-w Kwon | 6 | 6 | | | | | | | | | |
| Q | S Mochizuki | 4 | 3 | | | A Vukic | 4 | 2 | | | | | | | | | |
| | A Vukic | 6 | 6 | | | | | | 1/WC | S-w Kwon | 2 | 7$^7$ | 5 | | | | |
| Q | K Smith | 4 | 5 | | | | | | 6 | K Majchrzak | 6 | 6$^4$ | 7 | | | | |
| | H Međedović | 6 | 7 | | | H Međedović | 6$^1$ | 4 | | | | | | | | | |
| | M Marterer | 3 | 1 | | 6 | K Majchrzak | 7$^7$ | 6 | | | | | | | | | |
| 6 | K Majchrzak | 6 | 6 | | | | | | | | | | | 6 | K Majchrzak | 7$^7$ | 6 |
| 9 | C Eubanks | 6 | 6 | | | | | | | | | | | 5 | C O'Connell | 6$^3$ | 4 |
| LL | N Nakagawa | 0 | 3 | | 9 | C Eubanks | 7$^7$ | 6 | | | | | | | | | |
| | K Coppejans | 4 | 6 | 7 | | K Coppejans | 6$^2$ | 3 | | | | | | | | | |
| | A Kovacevic | 6 | 4 | 5 | | | | | 9 | C Eubanks | 6$^3$ | 6 | 1 | | | | |
| | K Uchida | 3 | 3 | | | | | | 5 | C O'Connell | 7$^7$ | 4 | 6 | | | | |
| WC | J-s Nam | 6 | 6 | | WC | J-s Nam | 3 | 2 | | | | | | | | | |
| Q | M Sasikumar | 4 | 2 | | 5 | C O'Connell | 6 | 6 | | | | | | | | | |
| 5 | C O'Connell | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | J Millman | 6 | 6 | | | | | | | | | | | | | | |
| | D Svrčina | 3 | 4 | | 8 | J Millman | 6 | 6 | | | | | | | | | |
| LL | M Gengel | 1 | 6 | 6 | LL | M Gengel | 3 | 3 | | | | | | | | | |
| | H Moriya | 6 | 4 | 2 | | | | | 8 | J Millman | 6 | 4 | 5 | | | | |
| LL | S-c Hong | 6 | 3 | 6 | | | | | LL | S-c Hong | 3 | 6 | 7 | | | | |
| | L Tu | 3 | 6 | 1 | LL | S-c Hong | 6 | 7 | | | | | | | | | |
| WC | Y-s Chung | 7 | 7 | | WC | Y-s Chung | 3 | 5 | | | | | | | | | |
| 3 | C-h Tseng | 5 | 5 | | | | | | | | | | | LL | S-c Hong | 6$^2$ | 3 |
| 7 | J Duckworth | 4 | 6 | 4 | | | | | | | | | | 2 | R Albot | 7$^7$ | 6 |
| PR | M Polmans | 6 | 2 | 6 | PR | M Polmans | 6 | 6 | | | | | | | | | |
| | R Hijikata | 6 | 6$^{12}$ | 4 | Q | M Purcell | 2 | 4 | | | | | | | | | |
| Q | M Purcell | 3 | 7$^{14}$ | 6 | | | | | PR | M Polmans | 5 | 2$^r$ | | | | | |
| | S Mansouri | 6$^5$ | 6$^2$ | | | | | | 2 | R Albot | 7 | 4 | | | | | |
| Q | J De Loore | 7$^7$ | 7$^7$ | | Q | J De Loore | 5 | 0$^r$ | | | | | | | | | |
| | T-l Wu | 3 | 6 | 2 | 2 | R Albot | 7 | 2 | | | | | | | | | |
| 2 | R Albot | 6 | 2 | 6 | | | | | | | | | | | | | |