Azarenka, Sarapova Match Highlights at Stuttgart 2012

Watch match highlights from quarterfinal action at the Porsche Tennis Grand Prix here. Featured videos include - Stuttgart: Shot Of The Day (Friday): Maria Sharapova has Friday's shot of the day at the Porsche Tennis Grand Prix. | Stuttgart: Kvitova vs. Kerber - Petra Kvitova takes on Angelique Kerber in the quarterfinals of the Porsche Tennis Grand Prix. | Stuttgart: Sharapova vs. Stosur - Maria Sharapova takes on Samantha Stosur in the quarterfinals of the Porsche Tennis Grand Prix. | Stuttgart: Azarenka vs. Barthel - Victoria Azarenka takes on Mona Barthel in the quarterfinals of the Porsche Tennis Grand Prix. | Stuttgart: Radwanska vs. Li - Agnieszka Radwanska takes on Li Na in the quarterfinals of the Porsche Tennis Grand Prix.