Davydenko advances at Estoril Open

LISBON, Portugal, May 1 (UPI) -- Former champion Nikolay Davydenko of Russia was a first-round winner Monday at the Estoril Open in Portugal.

The second-seeded Davydenko, who won this title in 2003, defeated American Vincent Spadea 7-6 (7-3), 6-3 for his first clay- court victory in four tries this season.

Also, Luxembourg's Gilles Muller ousted eighth-seeded Belgian Christophe Rochus 6-2, 6-0 and American Justin Gimelstob defeated Czech Lukas Dlouhy 3-6, 7-5, 6-3.

Argentine Gaston Gaudio beat Spaniard Tommy Robredo in last year's Estoril final. This week's top seed is Argentine David Nalbandian, the 2005 Tennis Masters Cup champion.