The women's draw was headlined by Viña del Mar and Acapulco champion Flavia Pennetta, Auckland quarterfinalist Maria Kirilenko, and Antwerp runner-up Karin Knapp.
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Other seeded players were Australian Open quarterfinalist and Adelaide runner-up Jarkko Nieminen, Rotterdam semifinalist Gilles Simon, Nicolas Mahut, Marc Gicquel and Michael Berrer.
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Also present in the field were 2005 Estoril titlist Lucie Šafářová, 2000 Estoril semifinalist Tathiana Garbin, Klára Zakopalová, Sofia Arvidsson and Camille Pin.
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Both the men's and the women's events took place at the Estoril Court Central in Oeiras, Portugal, from April 14 through April 20, 2008.
2008 | 2008 Summer Olympics | Australian Open | French Open | 2008 in music | Open University | open source | United States presidential election, 2008 | U.S. Open | Arena Football League (1987–2008) | UEFA Euro 2008 | Eurovision Song Contest 2008 | Estoril | Wacken Open Air | 2008 Sichuan earthquake | The Open Championship | Barack Obama presidential campaign, 2008 | 2008 World Series of Poker | John McCain presidential campaign, 2008 | Canadian federal election, 2008 | U.S. Open (tennis) | 2008 Commonwealth Youth Games | All England Open Badminton Championships | 2008 Rugby League World Cup | U.S. Open (golf) | Open Source | Open-pit mining | 2008 Summer Paralympics | 2008 in film | 2006 Australian Open |