MELBOURNE, Australia — Li Na advanced to the Australian Open semifinals for the third time in four years, bringing fourth-seeded Agnieszka Radwanska's 13-match winning streak to a shuddering halt.
Sixth-seeded Li, who lost the 2011 Australian Open final to Kim Clijsters months before her Grand Slam breakthrough at the French Open, had a 7-5, 6-3 victory over Radwanska in today's first match on Rod Laver Arena.
"She's a tough player. I was feeling today against a wall," Li said. "She can hit everywhere, but without a mistake. I was feeling just very tough. You have to focus on every shot. Not every point, every shot."
Radwanska came into the Australian Open with titles this season at Auckland and Sydney, where she beat Li in the semifinals, but she continued her poor subpar results in Grand Slam quarterfinals. She has advanced further once in seven tries, at Wimbledon last year when she lost the final to Serena Williams.
Sixth-seeded Li will play the winner of today's all-Russian quarterfinal between No. 2-ranked Maria Sharapova, who conceded only five games in her first four matches at Melbourne Park, and Ekaterina Makarova.
"At least now I'm in the semis," Li said. Sharapova "has to play, so … right? Now I can start now to enjoy my day. She has to fight, yeah. So that's better."
The quarterfinals on the other half of the draw will feature American teenager Sloane Stephens against Serena Williams, who is aiming for a third consecutive major title, and defending champion Victoria Azarenka against two-time major winner Svetlana Kuznetsova.
With a comeback 6-1, 3-6, 7-5 win over Bojana Jovanovski on Monday, Stephens qualified for her first quarterfinal at a major. Williams has already played at that level 34 times.
Earlier this month, Williams beat Stephens, 19, in straight sets at the Brisbane International.
"It will be tough, obviously. It's quarters of a Grand Slam," Stephens said. "There won't be that, like, first time, 'Oh, my God, I'm playing Serena.' That's kind of out of the window now. So that's good."
Williams and Azarenka advanced Monday, losing just four games between them against Russian rivals. Williams beat No. 14 Maria Kirilenko 6-2, 6-0, and Azarenka defeated Elena Vesnina 6-1, 6-1.
On the men's side, No. 2 Roger Federer and U.S. Open champion Andy Murray stayed on course for a semifinal in their half of the draw.
Federer won 6-4, 7-6 (7-4), 6-2 over big-serving Canadian Milos Raonic, advancing to a Grand Slam quarterfinal for the 35th consecutive time. Murray took advantage of Gilles Simon's fatigue for a 6-3, 6-1, 6-3 victory.