# 2023 San Diego Open – Singles

Barbora Krejčíková defeated Sofia Kenin in the final, 6–4, 2–6, 6–4 to win the singles title at the 2023 San Diego Open. It was the first final in the tournament’s history to be contested by two wildcards.
Iga Świątek was the reigning champion, but chose not to compete this year.

## Seeds

The top four seeds received a bye into the second round.
* Ons Jabeur (second round)
* Caroline Garcia (quarterfinals)
* Maria Sakkari (quarterfinals)
* Barbora Krejčíková (champion)
* Belinda Bencic (first round)
* Veronika Kudermetova (first round)
* Beatriz Haddad Maia (quarterfinals)
* Ekaterina Alexandrova (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 | Final |
| WC | Sofia Kenin | 6 | 5 | 6 | | | | | |
| Q | Emma Navarro | 2 | 7 | 4 | | | | | |
| Q | Emma Navarro | 2 | 7 | 4 | WC | Sofia Kenin | 4 | 6 | 4 |
| | | | | | 4/WC | Barbora Krejčíková | 6 | 2 | 6 |
| 4/WC | Barbora Krejčíková | 3 | 7 | 6 | 4/WC | Barbora Krejčíková | 6 | 2 | 6 |
| | Danielle Collins | 6 | 5 | 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 | Semifinals |
| | | | | | 1 | O Jabeur | 4 | 6$^4$ | | | | | | | | | | | |
| | A Parks | 2 | 7 | 4 | | A Potapova | 6 | 7$^7$ | | | | | | | | | | | |
| | A Potapova | 6 | 5 | 6 | | | | | | | A Potapova | 2 | 3 | | | | | | |
| WC | K Volynets | 2 | 6 | 6 | | | | | | WC | S Kenin | 6 | 6 | | | | | | |
| Q | C Ngounoue | 6 | 4 | 2 | WC | K Volynets | 6 | 4 | 2 | | | | | | | | | | |
| WC | S Kenin | 6 | 6 | | WC | S Kenin | 1 | 6 | 6 | | | | | | | | | | |
| 6 | V Kudermetova | 4 | 4 | | | | | | | | | | | | WC | S Kenin | 6 | 5 | 6 |
| | | | | | | | | | | | | | | | Q | E Navarro | 2 | 7 | 4 |
| | | | | | 3 | M Sakkari | 6 | 2 | | | | | | | | | | | |
| Q | M Fręch | 3 | 6 | 4 | Q | C Osorio | 3 | 2$^r$ | | | | | | | | | | | |
| Q | C Osorio | 6 | 1 | 6 | | | | | | 3 | M Sakkari | 4 | 6 | 6$^4$ | | | | | |
| | J Paolini | 5 | 0 | | | | | | | Q | E Navarro | 6 | 0 | 7$^7$ | | | | | |
| Q | E Navarro | 7 | 6 | | Q | E Navarro | 7 | 6 | | | | | | | | | | | |
| Q | A Sasnovich | 6 | 3 | 6 | Q | A Sasnovich | 5 | 4 | | | | | | | | | | | |
| 5 | B Bencic | 3 | 6 | 2 | | | | | | | | | | | | | | | |

### Bottom 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 |
| 7 | B Haddad Maia | 6 | 5 | 6 | | | | | | | | | | | | | | |
| WC | L Fernandez | 3 | 7 | 2 | 7 | B Haddad Maia | 7 | 6$^3$ | 6 | | | | | | | | | |
| | M Linette | 2 | 6$^5$ | | | M Kostyuk | 5 | 7$^7$ | 2 | | | | | | | | | |
| | M Kostyuk | 6 | 7$^7$ | | | | | | | 7 | B Haddad Maia | 4 | 3 | | | | | |
| | A Kalinina | 7$^7$ | 0 | 6 | | | | | | 4/WC | B Krejčíková | 6 | 6 | | | | | |
| | Ka Plíšková | 6$^4$ | 6 | 3 | | A Kalinina | 3 | 2 | | | | | | | | | | |
| | | | | | 4/WC | B Krejčíková | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 4/WC | B Krejčíková | 3 | 7 | 6 |
| 8 | E Alexandrova | 6$^3$ | 7$^8$ | 5 | | | | | | | | | | | D Collins | 6 | 5 | 2 |
| | J Ostapenko | 7$^7$ | 6$^6$ | 7 | | J Ostapenko | 6 | 3 | 4 | | | | | | | | | |
| Q | L Chirico | 5 | 0 | | | D Collins | 2 | 6 | 6 | | | | | | | | | |
| | D Collins | 7 | 6 | | | | | | | | D Collins | 6 | 6 | | | | | |
| | S Stephens | 6 | 6 | | | | | | | 2 | C Garcia | 2 | 3 | | | | | |
| | E Mertens | 1 | 3 | | | S Stephens | 3 | 6 | 1 | | | | | | | | | |
| | | | | | 2 | C Garcia | 6 | 3 | 6 | | | | | | | | | |

## Qualifying
### Seeds

* Kateřina Siniaková (first round)
* Emma Navarro (qualified)
* Camila Osorio (qualified)
* Claire Liu (qualifying competition)
* Magdalena Fręch (qualified)
* Aliaksandra Sasnovich (qualified)
* Kayla Day (qualifying competition)
* Madison Brengle (first round)
* Caroline Dolehide (first round)
* Storm Hunter (first round)
* Iryna Shymanovich (qualifying competition)
* Hailey Baptiste (qualifying competition)

### Qualifiers

* Louisa Chirico
* Emma Navarro
* Camila Osorio
* Clervie Ngounoue
* Magdalena Fręch
* Aliaksandra Sasnovich

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Kateřina Siniaková | 2 | 6 | 4 | | | | |
| | Renata Zarazúa | 6 | 4 | 6 | | | | |
| | Renata Zarazúa | 6 | 4 | 6 | Renata Zarazúa | 3 | 6 | 4 |
| | | | | | Louisa Chirico | 6 | 3 | 6 |
| | Louisa Chirico | 7$^7$ | 6 | | Louisa Chirico | 6 | 3 | 6 |
| 9 | Caroline Dolehide | 6$^4$ | 2 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Emma Navarro | 6 | 6 | | | | |
| WC | Yasmine Kabbaj | 1 | 2 | | | | |
| WC | Yasmine Kabbaj | 1 | 2 | 2 | Emma Navarro | 6 | 6 |
| | | | | 11 | Iryna Shymanovich | 3 | 1 |
| | Katrina Scott | 3 | 3 | 11 | Iryna Shymanovich | 3 | 1 |
| 11 | Iryna Shymanovich | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Camila Osorio | 6 | 6 | | | | | |
| | Jamie Loeb | 1 | 2 | | | | | |
| | Jamie Loeb | 1 | 2 | 3 | Camila Osorio | 5 | 6 | 6 |
| | | | | 7 | Kayla Day | 7 | 4 | 3 |
| | María Herazo González | 1 | 3 | 7 | Kayla Day | 7 | 4 | 3 |
| 7 | Kayla Day | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Claire Liu | 4 | 6 | 6 | | | | |
| WC | Alyssa Ahn | 6 | 1 | 2 | | | | |
| WC | Alyssa Ahn | 6 | 1 | 2 | 4 | Claire Liu | 4 | 2 |
| | | | | | WC | Clervie Ngounoue | 6 | 6 |
| WC | Clervie Ngounoue | 7$^7$ | 6 | | WC | Clervie Ngounoue | 6 | 6 |
| 10 | Storm Hunter | 6$^3$ | 4 | | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Magdalena Fręch | 6 | 6 | | | | | |
| | Yulia Starodubtseva | 1 | 3 | | | | | |
| | Yulia Starodubtseva | 1 | 3 | 5 | Magdalena Fręch | 6 | 6$^4$ | 6 |
| | | | | 12 | Hailey Baptiste | 4 | 7$^7$ | 4 |
| | Victoria Hu | 4 | 0 | 12 | Hailey Baptiste | 4 | 7$^7$ | 4 |
| 12 | Hailey Baptiste | 6 | 6 | | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Aliaksandra Sasnovich | 6 | 6 | | | | | |
| WC | Eryn Cayetano | 1 | 4 | | | | | |
| WC | Eryn Cayetano | 1 | 4 | | 6 | Aliaksandra Sasnovich | 6 | 6 |
| | | | | | | Varvara Lepchenko | 3 | 2 |
| | Varvara Lepchenko | 2 | 6 | 7 | | Varvara Lepchenko | 3 | 2 |
| 8 | Madison Brengle | 6 | 4 | 5 | | | | |