Belgian Justine Henin, playing her fourth tournament since returning from retirement, downed world number two Caroline Wozniacki on Wednesday to reach the semifinals of the Sony Ericsson Open. Henin, a former world number one, downed the second-seeded Danish teenager 6-7 (5/7), 6-3, 6-4.
In the semifinals, Henin will face 14th-seeded compatriot Kim Clijsters, who beat ninth-seeded Australian Samantha Stosur 6-3, 7-5.
Andy Roddick advanced to the men's semifinals with a 6-3, 6-3 victory over Nicolas Almagro.
Roddick, the 2004 champion, next faces either fourth-seeded Spaniard Rafael Nadal and eighth-seeded Jo-Wilfried Tsonga of France.
The top three men's seeds — Roger Federer, Novak Djokovic and Andy Murray — have all been eliminated.
"Obviously you're surprised any time he loses," Roddick said of Federer, who lost to Czech Tomas Berdych on Tuesday. "But that's tennis. That's why you play." Henin, currently ranked 33rd in the world and playing on wild card invitation, has already beaten four seeded players in a row.