Serena Williams advanced to the semifinals of the Madrid Open by beating Carla Suarez Navarro 6-1, 6-3 on Thursday.
The top-ranked American will next meet fourth-seeded Petra Kvitova of the Czech Republic, who ousted Irina-Camelia Begu of Romania 7-5, 6-3.
Earlier, defending champion Maria Sharapova advanced to the semifinals by defeating Caroline Wozniacki 6-1, 3-6, 6-3 despite seven double faults. Sharapova hadn't beaten Wozniacki since 2013, losing both of their matches last year at the U.S. Open and WTA Finals.