The Warsaw Open, formerly the J&S Cup, was a women's tennis tournament on the WTA Tour held in Warsaw, Poland. Held since 1995, the tournament was played on outdoor clay courts. The event returned for two years to the WTA Tour in 2009 after a year's hiatus but its slot on the tour calendar was taken over by the Brussels Open from 2011.

Year	Tournament name	Champion	Runner-up	Score
↓   Tier III tournament   ↓
1995	Warsaw Cup by Heros	Barbara Paulus	Alexandra Fusai	7–6, 4–6, 6–1
1996	Warsaw Cup	Henrieta Nagyová	Barbara Paulus	3–6, 6–2, 6–1
1997	Warsaw Cup by Heros	Barbara Paulus (2)	Henrieta Nagyová	6–4, 6–4
1998	Warsaw Cup by Heros	Conchita Martínez	Silvia Farina Elia	6–0, 6–3
↓   Tier IV Tournament   ↓
1999	Warsaw Cup by Heros	Cristina Torrens Valero	Inés Gorrochategui	7–5, 7–6
2000	Warsaw Cup by Heros	Henrieta Nagyová (2)	Amanda Hopmans	2–6, 6–4, 7–5
2001	Tournament not held
↓   Tier III tournament   ↓
2002	J&S Cup	Elena Bovina	Henrieta Nagyová	6–3, 6–1
↓   Tier II tournament   ↓
2003	J&S Cup	Amélie Mauresmo	Venus Williams	6–7, 6–0, 3–0 ret.
2004	J&S Cup	Venus Williams	Svetlana Kuznetsova	6–1, 6–4
2005	J&S Cup	Justine Henin-Hardenne	Svetlana Kuznetsova	3–6, 6–2, 7–5
2006	J&S Cup	Kim Clijsters	Svetlana Kuznetsova	7–5, 6–2
2007	J&S Cup	Justine Henin (2)	Alona Bondarenko	6–1, 6–3
2008	Tournament not held
↓   WTA Premier tournament   ↓
2009	Warsaw Open	Alexandra Dulgheru	Alona Bondarenko	7–6, 3–6, 6–0
2010	Polsat Warsaw Open	Alexandra Dulgheru (2)	Zheng Jie	6–3, 6–4

Year	Tournament name	Champions	Runners-up	Score
↓   Tier III tournament   ↓
1995	Warsaw Cup by Heros	Sandra Cecchini Laura Garrone	Henrieta Nagyová Denisa Krajčovičová	5–7, 6–2, 6–3
1996	Warsaw Cup	Olga Lugina Elena Wagner	Alexandra Fusai Laura Garrone	1–6, 6–4, 7–5
1997	Warsaw Cup by Heros	Ruxandra Dragomir Inés Gorrochategui	Meike Babel Catherine Barclay-Reitz	6–4, 6–0
1998	Warsaw Cup by Heros	Olga Lugina (2) Karina Habšudová	Liezel Huber Karin Kschwendt	7–6, 7–5
↓   Tier IV tournament   ↓
1999	Warsaw Cup by Heros	Cătălina Cristea Irina Selyutina	Amélie Cocheteux Janette Husárová	6–1, 6–2
2000	Warsaw Cup by Heros	Tathiana Garbin Janette Husárová	Iroda Tulyaganova Anna Zaporozhanova	6–3, 6–1
2001	Tournament not held
↓   Tier III Tournament   ↓
2002	J&S Cup	Jelena Kostanić Henrieta Nagyová	Evgenia Kulikovskaya Silvija Talaja	6–1, 6–1
↓   Tier II tournament   ↓
2003	J&S Cup	Liezel Huber Magdalena Maleeva	Eleni Daniilidou Francesca Schiavone	3–6, 6–4, 6–2
2004	J&S Cup	Silvia Farina Elia Francesca Schiavone	Gisela Dulko Patricia Tarabini	3–6, 6–2, 6–1
2005	J&S Cup	Tatiana Perebiynis Barbora Strýcová	Klaudia Jans Alicja Rosolska	6–1, 6–4
2006	J&S Cup	Elena Likhovtseva Anastasia Myskina	Anabel Medina Katarina Srebotnik	6–3, 6–4
2007	J&S Cup	Vera Dushevina Tatiana Perebiynis (2)	Elena Likhovtseva Elena Vesnina	7–5, 3–6, [10–2]
2008	Tournament not held
↓   WTA Premier tournament   ↓
2009	Warsaw Open	Raquel Kops-Jones Bethanie Mattek-Sands	Yan Zi Zheng Jie	6–1, 6–1
2010	Polsat Warsaw Open	Virginia Ruano Pascual Meghann Shaughnessy	Cara Black Yan Zi	6–3, 6–4

• List of tennis tournaments

• Official website

52°13′12″N 21°02′15″E / 52.2200°N 21.0375°E / 52.2200; 21.0375