# 2023 Korea Open – Singles

Jessica Pegula defeated Yuan Yue in the final, 6–2, 6–3 to win the singles tennis title at the 2023 Korea Open. Yuan was contesting her first WTA Tour final.
Ekaterina Alexandrova was the defending champion, but lost to Yanina Wickmayer in the second round.

## Seeds

* Jessica Pegula (champion)
* Jeļena Ostapenko (first round)
* Ekaterina Alexandrova (second round)
* Marie Bouzková (quarterfinals)
* Sofia Kenin (first round)
* Alycia Parks (first round)
* Arantxa Rus (second round, retired)
* Katie Boulter (first round)

## 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 |
| 1/WC | Jessica Pegula | 6 | 6 | | | | | |
| | Yanina Wickmayer | 4 | 3 | | | | | |
| | Yanina Wickmayer | 4 | 3 | | 1/WC | Jessica Pegula | 6 | 6 |
| | | | | | | Yuan Yue | 2 | 3 |
| | Yuan Yue | 6$^3$ | 6 | 6 | | Yuan Yue | 2 | 3 |
| | Emina Bektas | 7$^7$ | 4 | 2 | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1/WC | J Pegula | 6 | 6 | | | | | | | | | | | | | | | |
| | V Hrunčáková | 2 | 4 | | 1/WC | J Pegula | 6 | 6 | | | | | | | | | | |
| | N Podoroska | 2 | 4 | | | A Krueger | 3 | 1 | | | | | | | | | | |
| | A Krueger | 6 | 6 | | | | | | | 1/WC | J Pegula | 4 | 6 | 6 | | | | |
| | C Liu | 6 | 6 | | | | | | | | C Liu | 6 | 3 | 0 | | | | |
| Q | Y-w Ku | 3 | 3 | | | C Liu | 1 | 6 | 3 | | | | | | | | | |
| WC | N-l Han | 1 | 3 | | 7 | A Rus | 6 | 3 | 0$^r$ | | | | | | | | | |
| 7 | A Rus | 6 | 6 | | | | | | | | | | | | 1/WC | J Pegula | 6 | 6 |
| 3 | E Alexandrova | 6 | 6 | | | | | | | | | | | | | Y Wickmayer | 4 | 3 |
| | M Hontama | 3 | 1 | | 3 | E Alexandrova | 3 | 6$^6$ | | | | | | | | | | |
| Q | E-s Liang | 3 | 4 | | | Y Wickmayer | 6 | 7$^8$ | | | | | | | | | | |
| | Y Wickmayer | 6 | 6 | | | | | | | | Y Wickmayer | 6 | 6 | | | | | |
| | K von Deichmann | 5 | 6 | 3 | | | | | | | P Kudermetova | 3 | 1 | | | | | |
| LL | I Khromacheva | 7 | 4 | 0$^r$ | | K von Deichmann | 3 | 1 | | | | | | | | | | |
| | P Kudermetova | 3 | 6 | 6 | | P Kudermetova | 6 | 6 | | | | | | | | | | |
| 6 | A Parks | 6 | 1 | 0 | | | | | | | | | | | | | | |

### 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 | K Boulter | 4 | 4 | | | | | | | | | | | | | | |
| | K Juvan | 6 | 6 | | | K Juvan | 4 | 1$^r$ | | | | | | | | | |
| Q | A Hartono | 1 | 2 | | | Y Yuan | 6 | 4 | | | | | | | | | |
| | Y Yuan | 6 | 6 | | | | | | | Y Yuan | 7 | 7$^9$ | | | | | |
| | E Lys | 6 | 6 | | | | | | 4 | M Bouzková | 5 | 6$^7$ | | | | | |
| | AK Schmiedlová | 2 | 4 | | | E Lys | 1 | 0$^r$ | | | | | | | | | |
| | K Day | 4 | 4 | | 4 | M Bouzková | 6 | 0 | | | | | | | | | |
| 4 | M Bouzková | 6 | 6 | | | | | | | | | | | Y Yuan | 6$^3$ | 6 | 6 |
| 5 | S Kenin | 1 | 4 | | | | | | | | | | | E Bektas | 7$^7$ | 4 | 2 |
| | S-j Jang | 6 | 6 | | | S-j Jang | 3 | 4 | | | | | | | | | |
| | L Pigossi | 7$^7$ | 4 | 5 | | E Bektas | 6 | 6 | | | | | | | | | |
| | E Bektas | 6$^5$ | 6 | 7 | | | | | | E Bektas | 4 | 6 | 6 | | | | |
| Q | S Vickery | 4 | 4 | | | | | | | K Birrell | 6 | 3 | 2 | | | | |
| | K Birrell | 6 | 6 | | | K Birrell | 6 | 6 | | | | | | | | | |
| WC | D-y Back | 3 | 6 | 7$^7$ | WC | D-y Back | 0 | 1 | | | | | | | | | |
| 2 | J Ostapenko | 6 | 1 | 6$^4$ | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Sachia Vickery (qualified)
* Arianne Hartono (qualified)
* Liang En-shuo (qualified)
* Park So-hyun (first round, retired)
* Irina Khromacheva (qualifying competition, lucky loser)
* Lee Ya-hsuan (qualifying competition)
* Ksenia Zaytseva (qualifying competition)
* Peangtarn Plipuech (first round)

### Qualifiers

* Sachia Vickery
* Arianne Hartono
* Liang En-shuo
* Ku Yeon-woo

### Lucky loser

* Irina Khromacheva

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Sachia Vickery | 6 | 6 | | | | | | |
| WC | Jeong Bo-young | 2 | 3 | | | | | | |
| WC | Jeong Bo-young | 2 | 3 | | 1 | Sachia Vickery | 7$^{12}$ | 2 | 6 |
| | | | | | 7 | Ksenia Zaytseva | 6$^{10}$ | 6 | 2 |
| | Bethanie Mattek-Sands | 6 | 5 | 4 | 7 | Ksenia Zaytseva | 6$^{10}$ | 6 | 2 |
| 7 | Ksenia Zaytseva | 2 | 7 | 6 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Arianne Hartono | 6 | 6 | | | | |
| | Eri Hozumi | 2 | 4 | | | | |
| | Eri Hozumi | 2 | 4 | 2 | Arianne Hartono | 7 | 6 |
| | | | | 5 | Irina Khromacheva | 5 | 4 |
| | Kim Da-bin | 2 | 3 | 5 | Irina Khromacheva | 5 | 4 |
| 5 | Irina Khromacheva | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Liang En-shuo | 6 | 3 | 7$^7$ | | | | |
| | Luksika Kumkhum | 2 | 6 | 6$^5$ | | | | |
| | Luksika Kumkhum | 2 | 6 | 6$^5$ | 3 | Liang En-shuo | 6 | 6 |
| | | | | | | Mei Yamaguchi | 1 | 2 |
| | Mei Yamaguchi | 6 | 6 | | | Mei Yamaguchi | 1 | 2 |
| 8 | Peangtarn Plipuech | 4 | 3 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Park So-hyun | 6$^2$ | 1$^r$ | | | | | | |
| WC | Ku Yeon-woo | 7$^7$ | 4 | | | | | | |
| WC | Ku Yeon-woo | 7$^7$ | 4 | | WC | Ku Yeon-woo | 6 | 3 | 6 |
| | | | | | 6 | Lee Ya-hsuan | 1 | 6 | 4 |
| | Quinn Gleason | 6 | 6$^3$ | 4 | 6 | Lee Ya-hsuan | 1 | 6 | 4 |
| 6 | Lee Ya-hsuan | 2 | 7$^7$ | 6 | | | | | |