Dinara Safina photoUnseeded Maria Kirilenko of Russia advanced to the Quarterfinals of the 2010 Australian Open when compatriot, Dinara Safina suddenly retired with an injury during the 1st set of their 4th round match.

No. 2 Safina was facing set point, trailing 4-5 and serving at 30-40, when she limped to her changeover chair for a few moments, then walked up and shook Kirilenko’s hand.

Kirilenko ousted another Russian, Maria Sharapova in the first round, and it is the first time Kirilenko has reached the Quarterfinal of any Grand Slam.

Maria Kirilenko Kirilenko will now face another unseeded player, Jie Zheng of China, for a spot in the Semifinals. Zheng is the first Chinese player to reach the quarterfinals at the Australian Open.