The top-ranked tennis players in the world, Roger Federer of Switzerland and Justine Henin of Belgium, have both reached the quarterfinals at the Sony Ericsson Open in Miami, Florida.
Federer advanced Monday by defeating Spaniard Nicolas Almagro, 7-5, 6-3. Henin, the second seed in the women's draw behind Russian Maria Sharapova, defeated Russian Vera Zvonareva, 6-3, 6-2. Henin will next face sixth-seeded Nadia Petrova, who rallied to beat Russian compatriot Dinara Safina, 3-6, 6-2, 6-4.
But the event is over for two top seeds, Svetlana Kuznetsova of Russia and Kim Clijsters of Belgium. Shahar Peer of Israel toppled the third-seeded Kuznetsova, 6-4, 4-6, 6-3. Li Na of China stunned the fourth-seeded Clijsters, 4-6, 6-4, 6-2. Li next plays Russian Anna Chakvetadze, who ousted Italian Maria Santangelo, 6-1, 7-5.
Serena Williams of the United States ousted Lucie Safarova of the Czech Republic, 6-3, 6-4. Tathiana Garbin of France was a 6-4, 6-2 winner over Agnieszka Radwanska of Poland.
Among the men, American qualifier Amer Delic upset fourth-seeded Russia Nikolay Davydenko, 7-6, 6-3. Sixth-seeded Tommy Robredo of Spain topped German Florian Mayer, 6-4, 6-4. Robredo next faces Radek Stepanek, after the Czech eliminated Alejandro Falla of Colombia, 6-3, 6-2.
Juan Ignacio Chela of Argentina beat Czech Tomas Berdych, 6-4, 7-6. Guillermo Canas of Argentina defeated French opponent Richard Gasquet, 7-6, 6-3.
Some information for this report provided by AFP, AP.