# 2022 Seoul Open Challenger – Singles

Kwon Soon-woo was the defending champion but chose not to defend his title.
Qualifier Li Tu won his first Challenger title, defeating Wu Yibing 7–6$^{(7–5)}$, 6–4 in the final.

## Seeds

* Radu Albot (first round)
* Tseng Chun-hsin (first round)
* Alexei Popyrin (first round)
* Emilio Gómez (first round)
* Christopher O'Connell (quarterfinals)
* James Duckworth (semifinals)
* Steve Johnson (second round)
* Kamil Majchrzak (semifinals)

## 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 | Semifinals | Final | Final | Final | Final |
| | Wu Yibing | 6 | 3 | 6 | | | | |
| 8 | Kamil Majchrzak | 3 | 6 | 4 | | | | |
| 8 | Kamil Majchrzak | 3 | 6 | 4 | | Wu Yibing | 6$^5$ | 4 |
| | | | | | Q | Li Tu | 7$^7$ | 6 |
| Q | Li Tu | 6 | 6 | | Q | Li Tu | 7$^7$ | 6 |
| 6 | James Duckworth | 4 | 3 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Albot | 0 | 6 | 2 | | | | | | | | | | | | | | |
| | Y Wu | 6 | 4 | 6 | | Y Wu | 6 | 6 | | | | | | | | | | |
| | C-M Stebe | 7 | 6$^6$ | 6 | | C-M Stebe | 2 | 4 | | | | | | | | | | |
| | A Vukic | 5 | 7$^8$ | 4 | | | | | | | Y Wu | 6 | 6 | | | | | |
| | C Eubanks | 7$^8$ | 4 | 4 | | | | | | | D Svrčina | 2 | 4 | | | | | |
| | D Svrčina | 6$^6$ | 6 | 6 | | D Svrčina | 6 | 3 | 6 | | | | | | | | | |
| WC | Kim Cheong-eui | 3 | 2 | | 7 | S Johnson | 2 | 6 | 1 | | | | | | | | | |
| 7 | S Johnson | 6 | 6 | | | | | | | | | | | | Y Wu | 6 | 3 | 6 |
| 4 | E Gómez | 7 | 4 | 4 | | | | | | | | | | 8 | K Majchrzak | 3 | 6 | 4 |
| Q | S Mochizuki | 5 | 6 | 6 | Q | S Mochizuki | 6 | 2 | 6 | | | | | | | | | |
| PR | M Polmans | 6 | 3 | 4 | Q | M Neuchrist | 4 | 6 | 4 | | | | | | | | | |
| Q | M Neuchrist | 3 | 6 | 6 | | | | | | Q | S Mochizuki | 3 | 0 | | | | | |
| | J Millman | 6 | 6 | | | | | | | 8 | K Majchrzak | 6 | 6 | | | | | |
| Q | H Moriya | 3 | 1 | | | J Millman | 6 | 3 | 2 | | | | | | | | | |
| | J Clarke | 2 | 2 | | 8 | K Majchrzak | 2 | 6 | 6 | | | | | | | | | |
| 8 | K Majchrzak | 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 |
| 5 | C O'Connell | 5 | 6 | 7$^8$ | | | | | | | | | | | | | |
| | R Peniston | 7 | 3 | 6$^6$ | 5 | C O'Connell | 6 | 6 | | | | | | | | | |
| WC | Kim Jang-jun | 1 | 2 | | | R Hijikata | 4 | 1 | | | | | | | | | |
| | R Hijikata | 6 | 6 | | | | | | 5 | C O'Connell | 4 | 7$^7$ | 1 | | | | |
| | K Uchida | 4 | 0 | | | | | | Q | L Tu | 6 | 6$^4$ | 6 | | | | |
| Q | L Tu | 6 | 6 | | Q | L Tu | 6 | 6 | | | | | | | | | |
| Q | N Nakagawa | 3 | 7 | 7$^8$ | Q | N Nakagawa | 3 | 2 | | | | | | | | | |
| 3 | A Popyrin | 6 | 5 | 6$^6$ | | | | | | | | | | Q | L Tu | 6 | 6 |
| 6 | J Duckworth | 7$^8$ | 6 | | | | | | | | | | | 6 | J Duckworth | 4 | 3 |
| Q | A Kovacevic | 6$^6$ | 3 | | 6 | J Duckworth | 7$^8$ | 6 | | | | | | | | | |
| WC | Ho Chung | 4 | 6 | 3 | WC | Ho Chung | 6$^6$ | 1 | | | | | | | | | |
| | Z Piros | 6 | 3 | 0$^r$ | | | | | 6 | J Duckworth | 4 | 7$^8$ | 6 | | | | |
| | K Coppejans | 6 | 6 | | | | | | | M Marterer | 6 | 6$^6$ | 3 | | | | |
| | T-l Wu | 3 | 4 | | | K Coppejans | 3 | 4 | | | | | | | | | |
| | M Marterer | 6 | 6 | | | M Marterer | 6 | 6 | | | | | | | | | |
| 2 | C-h Tseng | 3 | 2 | | | | | | | | | | | | | | |