# 2023 Copa Oster – Singles

This was the first WTA 125 tournament in Cali since 2013. Lara Arruabarrena was the champion when the event was last held, but she retired from professional tennis in August 2022.
Nadia Podoroska won the title, defeating Paula Ormaechea in the final, 6–4, 6–2.

## Seeds

* Réka Luca Jani (first round)
* Laura Pigossi (semifinals)
* Aliona Bolsova (second round)
* María Lourdes Carlé (first round)
* Caroline Dolehide (first round)
* Hailey Baptiste (first round)
* Carol Zhao (first round)
* Fernanda Contreras Gómez (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 |
| | Nadia Podoroska | 6 | 6 | | | |
| WC | Emiliana Arango | 4 | 1 | | | |
| WC | Emiliana Arango | 4 | 1 | Nadia Podoroska | 6 | 6 |
| | | | | Paula Ormaechea | 4 | 2 |
| | Paula Ormaechea | 7 | 6 | Paula Ormaechea | 4 | 2 |
| 2 | Laura Pigossi | 5 | 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 |
| 1 | RL Jani | 0 | 2 | | | | | | | | | | | | | | |
| | N Podoroska | 6 | 6 | | | N Podoroska | 4 | 6 | 6 | | | | | | | | |
| | J Loeb | 3 | 4 | | | C Monnet | 6 | 3 | 1 | | | | | | | | |
| | C Monnet | 6 | 6 | | | | | | | | N Podoroska | 6 | 6 | | | | |
| WC | MP Pérez | 0 | 4 | | | | | | | 8 | F Contreras Gómez | 3 | 3 | | | | |
| | X You | 6 | 6 | | | X You | 2 | 0 | | | | | | | | | |
| Q | M Partaud | 1 | 6 | 1 | 8 | F Contreras Gómez | 6 | 6 | | | | | | | | | |
| 8 | F Contreras Gómez | 6 | 1 | 6 | | | | | | | | | | | N Podoroska | 6 | 6 |
| 4 | ML Carlé | 4 | 2 | | | | | | | | | | | WC | E Arango | 4 | 1 |
| Q | M Colmegna | 6 | 6 | | Q | M Colmegna | 7 | 6 | | | | | | | | | |
| WC | Y Lizarazo | 4 | | | WC | Y Lizarazo | 5 | 4 | | | | | | | | | |
| | W Osuigwe | 2$^r$ | | | | | | | | Q | M Colmegna | 1 | 5 | | | | |
| | R Zarazúa | 6$^4$ | 6 | 6 | | | | | | WC | E Arango | 6 | 7 | | | | |
| | J Aney | 7$^7$ | 0 | 1 | | R Zarazúa | 3 | 3 | | | | | | | | | |
| WC | E Arango | 6 | 6 | | WC | E Arango | 6 | 6 | | | | | | | | | |
| 7 | C Zhao | 4 | 3 | | | | | | | | | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | H Baptiste | 7 | 6$^4$ | 4 | | | | | | | | | | | | | | |
| | E Kalieva | 5 | 7$^7$ | 6 | | E Kalieva | 6 | 4 | 6 | | | | | | | | | |
| | N Brancaccio | 7 | 6 | | | N Brancaccio | 3 | 6 | 2 | | | | | | | | | |
| | J Riera | 5 | 3 | | | | | | | | E Kalieva | 5 | 6 | 3 | | | | |
| | W Falkowska | 7 | 0 | 1 | | | | | | | P Ormaechea | 7 | 3 | 6 | | | | |
| | P Ormaechea | 5 | 6 | 6 | | P Ormaechea | 7$^7$ | 6 | | | | | | | | | | |
| | K Kawa | 6$^1$ | 5 | | 3 | A Bolsova | 6$^4$ | 3 | | | | | | | | | | |
| 3 | A Bolsova | 7$^7$ | 7 | | | | | | | | | | | | | P Ormaechea | 7 | 6 |
| 5 | C Dolehide | 6$^5$ | 6 | 6$^4$ | | | | | | | | | | | 2 | L Pigossi | 5 | 3 |
| Q | C Alves | 7$^7$ | 3 | 7$^7$ | Q | C Alves | 1 | 7 | 1 | | | | | | | | | |
| WC | M Herazo González | 2 | 2 | | | V Strakhova | 6 | 5 | 6 | | | | | | | | | |
| | V Strakhova | 6 | 6 | | | | | | | | V Strakhova | 3 | 6 | 3 | | | | |
| | R Șerban | 5 | 6 | 7$^7$ | | | | | | 2 | L Pigossi | 6 | 3 | 6 | | | | |
| Q | Q Gleason | 7 | 1 | 6$^4$ | | R Șerban | 2 | 3 | | | | | | | | | | |
| | G Cé | 1 | 1 | | 2 | L Pigossi | 6 | 6 | | | | | | | | | | |
| 2 | L Pigossi | 6 | 6 | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Carolina Alves (qualified)
* Kyōka Okamura (first round)
* Luisa Meyer auf der Heide (first round)
* Valeriya Strakhova (moved to main draw)
* Martina Colmegna (qualified)
* Marine Partaud (qualified)
* Olivia Tjandramulia (first round)
* Amina Anshba (qualifying competition)

### Qualifiers

* Carolina Alves
* Martina Colmegna
* Quinn Gleason
* Marine Partaud

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Carolina Alves | 6 | 6 | | | | |
| | Alexandra Riley | 0 | 0 | | | | |
| | Alexandra Riley | 0 | 0 | 1 | Carolina Alves | 6 | 6 |
| | | | | | Emily Seibold | 4 | 3 |
| | Emily Seibold | 6 | 6 | | Emily Seibold | 4 | 3 |
| 7 | Olivia Tjandramulia | 2 | 1 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Kyōka Okamura | 2 | 3 | | | | |
| | Cadence Brace | 6 | 6 | | | | |
| | Cadence Brace | 6 | 6 | | Cadence Brace | 1 | 4 |
| | | | | 5 | Martina Colmegna | 6 | 6 |
| | Sabastiani León | 0 | 0 | 5 | Martina Colmegna | 6 | 6 |
| 5 | Martina Colmegna | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Luisa Meyer auf der Heide | 1 | 1 | | | | | |
| PR | Quinn Gleason | 6 | 6 | | | | | |
| PR | Quinn Gleason | 6 | 6 | PR | Quinn Gleason | 4 | 6 | 6 |
| | | | | 8 | Amina Anshba | 6 | 4 | 2 |
| WC | María Paula Vargas Triana | 0 | 0 | 8 | Amina Anshba | 6 | 4 | 2 |
| 8 | Amina Anshba | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| Alt | María Torres Murcia | 3 | 2 | | | | | |
| | Yuliana Monroy | 6 | 6 | | | | | |
| | Yuliana Monroy | 6 | 6 | | Yuliana Monroy | 6 | 3 | 1 |
| | | | | 6 | Marine Partaud | 4 | 6 | 6 |
| WC | María Paz Ospina | 0 | 1 | 6 | Marine Partaud | 4 | 6 | 6 |
| 6 | Marine Partaud | 6 | 6 | | | | | |