It was the 20th edition of the Estoril Open, and was part of the ATP World Tour 250 series of the 2009 ATP World Tour, and of the International-level tournaments of the 2009 WTA Tour.
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Both the men's and the women's events took place at the Estádio Nacional in Oeiras, Portugal, from May 2 through May 10, 2009.
2009 | Australian Open | French Open | Open University | open source | U.S. Open | 2009 in music | Estoril | Wacken Open Air | Avatar (2009 film) | American Recovery and Reinvestment Act of 2009 | New Jersey gubernatorial election, 2009 | Eurovision Song Contest 2009 | The Open Championship | U.S. Open (tennis) | 2009 Summer Universiade | All England Open Badminton Championships | 2009 UCI Track Cycling World Championships | 2009 NFL season | U.S. Open (golf) | Open Source | Open-pit mining | 2009 World Championships in Athletics | 2006 Australian Open | Open Software Foundation | Indira Gandhi National Open University | European Parliament election, 2009 | 2009 Southeast Asian Games | Lamar Hunt U.S. Open Cup | 2009 WTA Tour |