Melbourne: Agnieszka Radwanska has won her 13th consecutive match of the year, advancing to the Australian Open quarter-finals with a 6-2, 6-4 win over Ana Ivanovic on Sunday.
The No. 4-ranked Radwanska, who won tournaments in Auckland and Sydney ahead of the Australian Open, will play 2011 French Open champion Li Na of China in the quarter-finals. Li beat Julia Gorges of Germany 7-6 (6), 6-1 in an earlier match Sunday.
Radwanska, who lost to Serena Williams in last year's Wimbledon final, advanced to the final eight in Australia for the third consecutive year.
Radwanska advanced to the quarter-finals after registering straight-set victory over Ana Ivanovic.