| Singles | |
|---|---|
| 2023 Koper Open | |
| Champion |  Aliona Bolsova |
| Runner-up |  Irina Bara |
| Score | 3–6, 6–2, 4–1 retired |
Kathinka von Deichmann was the defending champion [1] but chose not to participate.
Aliona Bolsova won the title after Irina Bara retired in the final at 3–6, 6–2, 4–1.
All seeds receive a bye into the second round.
Jasmine Paolini (third round)
Léolia Jeanjean (second round)
Réka Luca Jani (quarterfinals)
Olga Danilović (third round)
Polina Kudermetova (second round)
Tara Würth (second round) Aliona Bolsova (champion) Nuria Brancaccio (third round)
Jaimee Fourlis (second round) Jaqueline Cristian (semifinals) Jéssica Bouzas Maneiro (quarterfinals) Antonia Ružić (third round)
Lina Gjorcheska (second round) Alexandra Cadanțu-Ignatik (second round) Kristina Dmitruk (quarterfinals) Tena Lukas (third round)| Quarterfinals | Semifinals | Final | ||||||||||||||||||
| 15 | Kristina Dmitruk | 2 | 4 | |||||||||||||||||
| 10 | Jaqueline Cristian | 6 | 6 | |||||||||||||||||
| 10 | Jaqueline Cristian | 2 | 1 | |||||||||||||||||
| 7 | Aliona Bolsova | 6 | 6 | |||||||||||||||||
| 3 | Réka Luca Jani | 0 | 2 | |||||||||||||||||
| 7 | Aliona Bolsova | 6 | 6 | |||||||||||||||||
| 7 | Aliona Bolsova | 3 | 6 | 4 | ||||||||||||||||
| Irina Bara | 6 | 2 | 1r | |||||||||||||||||
| Irina Bara | 6 | 6 | ||||||||||||||||||
| LL |  Silvia Ambrosio | 2 | 0 | |||||||||||||||||
| Irina Bara | 3 | 7 | 6 | |||||||||||||||||
| Q | Andreea Mitu | 6 | 5 | 4 | ||||||||||||||||
| 11 | Jéssica Bouzas Maneiro | 4 | 1 | |||||||||||||||||
| Q | Andreea Mitu | 6 | 6 | |||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 1 | J Paolini | 6 | 6 | ||||||||||||||||||||||||
| WC |  N Jurič | 4 | 1 | Q |  D Hindová | 1 | 0 | ||||||||||||||||||||
| Q | D Hindová | 6 | 6 | 1 | J Paolini | 0 | 2 | ||||||||||||||||||||
| Q | I Šebestová | 1 | 0 | 15 | K Dmitruk | 6 | 6 | ||||||||||||||||||||
 W Falkowska | 6 | 6 | W Falkowska | 7 | 1 | 5 | |||||||||||||||||||||
| 15 | K Dmitruk | 5 | 6 | 7 | |||||||||||||||||||||||
| 15 | K Dmitruk | 2 | 4 | ||||||||||||||||||||||||
| 10 | J Cristian | 6 | 6 | ||||||||||||||||||||||||
| 10 | J Cristian | 63 | 4 | ||||||||||||||||||||||||
| L Bošković | 6 | 6 | L Bošković | 77 | 0r | ||||||||||||||||||||||
| Q |  E Méri | 3 | 4 | 10 | J Cristian | 77 | 6 | ||||||||||||||||||||
| J Kolodynska | 4 | 78 | 4 | V Erjavec | 64 | 4 | |||||||||||||||||||||
| V Erjavec | 6 | 66 | 6 | V Erjavec | 77 | 6 | |||||||||||||||||||||
| 6 | T Würth | 62 | 2 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 3 | RL Jani | 6 | 6 | ||||||||||||||||||||||||
| Q | Y Morderger | 4 | 4 |  B Cengiz | 3 | 3 | |||||||||||||||||||||
| B Cengiz | 6 | 6 | 3 | RL Jani | 2 | 6 | 6 | ||||||||||||||||||||
| Q | A Nagy | 1 | 2 | 16 | T Lukas | 6 | 1 | 4 | |||||||||||||||||||
| WC | A Anshba | 6 | 6 | WC | A Anshba | 4 | 3 | ||||||||||||||||||||
| 16 | T Lukas | 6 | 6 | ||||||||||||||||||||||||
| 3 | RL Jani | 0 | 2 | ||||||||||||||||||||||||
| 7 | A Bolsova | 6 | 6 | ||||||||||||||||||||||||
| 12 | A Ružić | 6 | 6 | ||||||||||||||||||||||||
| İ Öz | 6 | 3 | 6 | İ Öz | 2 | 2 | |||||||||||||||||||||
| WC | P Lovrič | 3 | 6 | 3 | 12 | A Ružić | 6 | 1 | 0 | ||||||||||||||||||
| N Szabanin | 5 | 6 | 2r | 7 | A Bolsova | 3 | 6 | 6 | |||||||||||||||||||
 A Kulikova | 7 | 3 | 4 | A Kulikova | 4 | 6 | 1 | ||||||||||||||||||||
| 7 | A Bolsova | 6 | 4 | 6 | |||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 5 | P Kudermetova | 4 | 4 | ||||||||||||||||||||||||
| L Radivojević | 4 | 7 | 2 | I Bara | 6 | 6 | |||||||||||||||||||||
| I Bara | 6 | 5 | 6 | I Bara | 79 | 5 | 77 | ||||||||||||||||||||
| J Fett | 6 | 1 | J Fett | 67 | 7 | 65 | |||||||||||||||||||||
| N Potočnik | 4 | 0r | J Fett | 6 | 6 | ||||||||||||||||||||||
| 9 | J Fourlis | 3 | 3 | ||||||||||||||||||||||||
| I Bara | 6 | 6 | |||||||||||||||||||||||||
| LL | S Ambrosio | 2 | 0 | ||||||||||||||||||||||||
| 14 | A Cadanțu-Ignatik | 1 | 3 | ||||||||||||||||||||||||
| A Kučmová | 3 | 7 | 4 | LL | S Ambrosio | 6 | 6 | ||||||||||||||||||||
| LL | S Ambrosio | 6 | 5 | 6 | LL | S Ambrosio | 6 | 6 | |||||||||||||||||||
| Q | C Ferrando | 7 | 0 | 2 | 4/SR | O Danilović | 2 | 1 | |||||||||||||||||||
| WC | EN Milić | 5 | 6 | 6 | WC | EN Milić | 2 | 3 | |||||||||||||||||||
| 4/SR | O Danilović | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Third round | Quarterfinals | ||||||||||||||||||||||||
| 8 | N Brancaccio | 6 | 6 | ||||||||||||||||||||||||
| D Cherubini | 4 | 4 |  S Lamens | 4 | 1 | ||||||||||||||||||||||
| S Lamens | 6 | 6 | 8 | N Brancaccio | 62 | 3 | |||||||||||||||||||||
| A Turati | 1 | 3 | 11 | J Bouzas Maneiro | 77 | 6 | |||||||||||||||||||||
| Q |  A Soboleva | 6 | 6 | Q | A Soboleva | 3 | 5 | ||||||||||||||||||||
| 11 | J Bouzas Maneiro | 6 | 7 | ||||||||||||||||||||||||
| 11 | J Bouzas Maneiro | 4 | 1 | ||||||||||||||||||||||||
| Q | A Mitu | 6 | 6 | ||||||||||||||||||||||||
| 13 | L Gjorcheska | 1 | 7 | 4 | |||||||||||||||||||||||
| Q | A Mitu | 6 | 7 | Q | A Mitu | 6 | 5 | 6 | |||||||||||||||||||
 P Plipuech | 3 | 5 | Q | A Mitu | 6 | 6 | |||||||||||||||||||||
| SR | K McPhee | 5 | 6 | 3 | WC | Ž Falkner | 1 | 1 | |||||||||||||||||||
| WC | Ž Falkner | 7 | 4 | 6 | WC | Ž Falkner | 7 | 6 | |||||||||||||||||||
| 2 | L Jeanjean | 5 | 3 | ||||||||||||||||||||||||
Darya Kasatkina won the title, defeating Ivana Jorović in the final, 6–7(5–7), 6–2, 6–3.
Belinda Bencic was the defending champion, but chose to compete in the women's singles where she lost to Simona Halep in the third round.
Ana Konjuh was the defending champion, having won the event in 2013, however she participated in the qualifying round and lost to Urszula Radwańska in the first round.
Barbora Krejčíková and Kateřina Siniaková were the defending champions, having won the event in 2013, however both players chose not to participate. İpek Soylu and Jil Teichmann won the tournament by defeating Vera Lapko and Tereza Mihalíková in the final.
Elizaveta Kulichkova was the defending champion, but she participated in the women's qualifying competition where she lost to Petra Martić in the second round. Tereza Mihalíková won the title, defeating Katie Swan in the final, 6–1, 6–4.
Anhelina Kalinina and Elizaveta Kulichkova were the defending champions, but both players chose not to compete in 2015.
Maia Lumsden was the defending champion, but lost to Yanina Wickmayer in the quarterfinals.
Anna Karolína Schmiedlová was the defending champion, but lost in the second round to Beatriz Haddad Maia.
Petra Kvitová was the defending champion, but chose not to participate this year.
Kateřina Siniaková was the defending champion from the last time the tournament was held in 2017, but chose not to participate this year.
Anastasija Sevastova was the defending champion, but lost in the second round to Patricia Maria Țig.
This was the first edition of the tournament.
This was the first edition of the tournament.
Simona Halep won the women's singles tennis title at the 2020 Italian Open after the defending champion Karolína Plíšková retired from the final, with the scoreline at 6–0, 2–1. It was her first Italian Open title.
Defending champion Ashleigh Barty won the women's singles tennis title at the 2021 Miami Open after Bianca Andreescu retired from the final with the scoreline at 6–3, 4–0. Barty saved a match point en route to the title, in the second round against Kristína Kučová.
Andrea Sestini Hlaváčková and Lucie Hradecká were the defending champions having won the previous edition in 2013, but Hradecká chose to compete at the 2021 Prague Open instead, whilst Sestini Hlaváčková retired from professional tennis in 2019.
Sára Bejlek was the defending champion and successfully defended her title, defeating Lina Gjorcheska in the final, 6–2, 7–6(7–0).
Irina-Camelia Begu won the title, defeating Réka Luca Jani in the final, 6–3, 6–3.
This was the first edition of the tournament.
Aliona Bolsova and Andrea Gámiz were the defending champions but Gámiz chose to compete at the 2022 Montevideo Open instead. Bolsova partnered alongside Rebeka Masarova but lost in the quarterfinals to Irina Khromacheva and Iryna Shymanovich.