MELBOURNE, Australia (AP) Defending champion Kim Clijsters beat top-ranked Caroline Wozniacki 6-3, 7-6 (4) to reach the Australian Open semifinals.
The four-time major winner next plays third-seeded Victoria Azarenka, who had a 6-7 (0), 6-0, 6-2 win over No. 8 Agnieszka Radwanska earlier Tuesday to move into the semis of a Grand Slam for the second time.
Azarenka is one of three players who can move into No. 1. Wozniacki needed to reach the semifinals to retain the top ranking.
Clijsters has had a roller-coaster ride into the Australian Open semis for the seventh time after spraining her ankle and having to save four match points in a fourth-round win over Li Na.