| Type: | joint |
| Kozerki Open | |
| Event Name: | Polish Open (WTA), Kozerki Open (ATP) |
| Location: | Warsaw (WTA), Grodzisk Mazowiecki, Poland (ATP) |
| Venue: | Legia Tennis Centre(WTA), Akademia Tenisowa Tenis Kozerki(ATP) |
| Wta Tier: | WTA 125 |
| Surface: | Hard / outdoor |
| Wta Draw: | 32S/16Q/16D |
| Wta Prize Money: | $115,000 |
| Atp Category: | ATP Challenger 75 |
| Atp Draw: | 32S/24Q/16D |
| Atp Prize Money: | €118,000 |
| Men's Singles: | Jesper de Jong |
| Women's Singles: |  Alycia Parks |
| Men's Doubles: |  Théo Arribagé Luca Sanchez |
| Women's Doubles: |  Weronika Falkowska Martyna Kubka |
| Website: | www.kozerkiopen.pl |
The Kozerki Open is a tournament for professional female tennis players. The event is classified as a WTA 125 event since 2023, and was held in Warsaw, Poland in 2024. Prior to 2023, the tournament was a part of ITF Women's World Tennis Tour. It has been held annually in Grodzisk Mazowiecki, Poland, on outdoor hardcourts since 2019. Since 2022, a male version of the tournament was held as part of the ATP Challenger Tour.
| Year | Champion | Runner-up | Score | |
|---|---|---|---|---|
| Marc-Andrea Hüsler | 6–1, 6–4 | |||
| Jesper de Jong | 6–3, 6–3 | |||
 Tomáš Macháč | 1–6, 6–3, 6–2 |
| Year | Champion | Runner-up | Score | |
|---|---|---|---|---|
| Alycia Parks | 4–6, 6–3, 6–3 | |||
 Dayana Yastremska | 2–6, 6–1, 6–3 | |||
| ⬆️ WTA 125 event ⬆️ | ||||
| Kateřina Siniaková | 6–4, 6–1 | |||
 Ekaterine Gorgodze | 7–6(9–7), 0–6, 6–4 | |||
| 2020 | ||||
| 2019 | Maja Chwalińska | 7–6(7–5), 6–4 | ||
| Year | Champions | Runners-up | Score | |
|---|---|---|---|---|
 Charles Broom David Stevenson | 6–3, 7–6(7–3) | |||
| Théo Arribagé Luca Sanchez | 6–4, 6–4 | |||
Robin Haase Philipp Oswald | 6–3, 6–4 |
| Year | Champions | Runners-up | Score | |
|---|---|---|---|---|
| Weronika Falkowska Martyna Kubka | 6–4, 7–6(7–5) | |||
| Katarzyna Kawa Elixane Lechemia | 6–3, 6–4 | |||
| ⬆️ WTA 125 event ⬆️ | ||||
| Alicia Barnett Olivia Nicholls | 6–1, 7–6(7–3) | |||
Bárbara Gatica  Rebeca Pereira | 6–3, 6–1 | |||
| 2020 | ||||
| 2019 | Ania Hertel Anastasiya Shoshyna | 6–7(6–8), 6–2, [10–4] | ||