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Friday, April 26, 2013
WTA Tour Porsche Grand Prix Results

Associated Press

Friday

At Porsche-Arena

Stuttgart, Germany

Purse: $795,707 (Premier)

Surface: Clay-Indoor

Singles

Quarterfinals

Angelique Kerber (3), Germany, def. Yaroslava Shvedova, Kazakhstan, 6-3, 7-6 (2).

Maria Sharapova (1), Russia, def. Ana Ivanovic, Serbia, 7-5, 4-6, 6-4.

Bethanie Mattek-Sands, United States, def. Sabine Lisicki, Germany, 6-4, 6-2.

Li Na (2), China, def. Petra Kvitova (5), Czech Republic, 6-3, 7-5.

Doubles

Quarterfinals

Bethanie Mattek-Sands, United States, and Sania Mirza, India, def. Liezel Huber, United States, and Janette Husarova, Slovakia, 7-5, 6-4.

Mona Barthel and Sabine Lisicki, Germany, def. Jelena Jankovic, Serbia, and Mirjana Lucic-Baroni, Croatia, 6-1, 2-6, 10-4.