Li Na has advanced to the Australian Open semifinals with a 7-5, 6-3 victory over fourth-seeded Agnieszka Radwanska, ending the Polish player's 13-match winning streak to start the year.
In a match featuring 10 breaks of serve -- six by Li -- the sixth-seeded Chinese player broke Radwanska's service in the sixth game of the second set without allowing her opponent a point. Serving for the match, Li fended off two break points before prevailing in 1 hour, 42 minutes.
Li, a losing finalist here to Kim Clijsters in 2011 just before she clinched her only Grand Slam title at the French Open, will play the winner of Tuesday's later quarterfinal between Maria Sharapova and Ekaterina Makarova.
Radwanska won tournaments in Auckland and Sydney ahead of the Australian Open.