The world's two top-ranked tennis players -- men's number one Roger Federer of Switzerland and women's number one Lindsay Davenport of the United States -- have reached the fourth round of the French Open in Paris.
Federer scored a three-set win over Fernando Gonzalez of Chile, 7-6, 7-5, 6-2. The Swiss player next takes on 1998 champion Carlos Moya of Spain, who scored a five-set win over countryman Fernando Vicente (6-4, 7-6, 6-7, 0-6, 6-4).
Meanwhile, Davenport was again taken to three sets by her opponent, but rallied to beat France's Virginie Razzano (7-5, 4-6, 6-4). The top-seeded American faces former world number one Kim Clijsters of Belgium, a straight-set winner over Daniela Hantuchova of Slovakia (6-4, 6-2).
Also Friday, fourth-seeded Elena Dementieva of Russia ousted Akiko Morigami of Japan (6-3, 4-6, 6-3). Dementieva takes on 16th-seeded countrywoman Elena Likhovtseva, a straight-sets winner over Silvia Farina Elia of Italy (7-5, 6-2).
Former champion Mary Pierce of France beat ninth seeded Vera Zvonareva of Russia in straight sets (7-6, 7-5). Pierce faces Switzerland's Patty Schnyder, a three-set winner over Italian Flavia Pennetta (4-6, 6-0, 6-1).
American Venus Williams lost her third-round match to Bulgarian Sesil Karatantcheva in three sets (6-3, 1-6, 6-1). Williams committed 52 unforced errors in the match against the 15-year-old, who is ranked 98th in the world.
In men's play, Spanish star Rafael Nadal won the battle of the teenagers by beating Frenchman Richard Gasquet in straight sets (6-4, 6-3, 6-2). Nadal faces another French player in the round of 16 -- Sebastien Grosjean, who ousted Radek Stepanek of the Czech Republic in five sets (6-1, 4-6, 3-6, 6-3, 6-4).
Defending champion Gaston Gaudio of Argentina scored a straight-set win over Spain's Felix Mantilla (6-4, 6-4, 6-3). The Argentine plays David Ferrer of Spain, who ousted South Korean Hyung-Taik Lee (6-3, 6-1, 7-5).
Some information for this report provided by AP.