2023 Copa Oster

The 2023 Copa Oster was a professional tennis tournament played on outdoor clay courts. It was the eighth edition of the tournament and second as a WTA 125 tournament which is part of the 2023 WTA 125 tournaments. It took place at the Club Campestre in Cali, Colombia between 30 January and 5 February 2023. The event made a return to Cali after an absence of 10 years.

Singles

 * 🇦🇷 Nadia Podoroska def. 🇦🇷 Paula Ormaechea, 6–4, 6–2

Doubles

 * 🇵🇱 Weronika Falkowska / 🇵🇱 Katarzyna Kawa def. 🇯🇵 Kyōka Okamura / 🇨🇳 You Xiaodi, 6–1, 5–7, [10–6]

Seeds

 * 1 Rankings as of 16 January 2023

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇴 Emiliana Arango
 * 🇨🇴 María Herazo González
 * 🇨🇴 Yuliana Lizarazo
 * 🇨🇴 María Paulina Pérez

The following players received entry from the qualifying draw:
 * 🇧🇷 Carolina Alves
 * 🇮🇹 Martina Colmegna
 * 🇺🇸 Quinn Gleason
 * 🇫🇷 Marine Partaud

Withdrawals

 * 🇩🇪 Katharina Hobgarski → replaced by 🇧🇷 Gabriela Cé
 * 🇫🇷 Séléna Janicijevic → replaced by 🇮🇹 Nuria Brancaccio
 * 🇬🇧 Francesca Jones → replaced by 🇦🇷 Julia Riera
 * 🇧🇪 Magali Kempen → replaced by 🇺🇸 Jamie Loeb
 * 🇷🇴 Gabriela Lee → replaced by 🇺🇸 Whitney Osuigwe
 * 🇺🇸 Elizabeth Mandlik → replaced by 🇵🇱 Weronika Falkowska
 * Arantxa Rus → replaced by 🇺🇦 Valeriya Strakhova

Retirements

 * 🇺🇸 Whitney Osuigwe

Seeds

 * 1 Rankings as of 16 January 2023

Other entrants
The following pair received a wildcard into the doubles main draw:
 * 🇨🇴 Yuliana Lizarazo / 🇨🇴 María Paulina Pérez

The following pair received entry as alternates:
 * 🇲🇽 Renata Zarazúa / 🇨🇴 Emiliana Arango

Withdrawals

 * 🇪🇸 Aliona Bolsova / 🇺🇸 Caroline Dolehide → replaced by 🇲🇽 Renata Zarazúa / 🇨🇴 Emiliana Arango