Serena and Sharapova Both Into Madrid Quarterfinals
Serena Williams and Maria Sharapova have both advanced to the quarterfinals of the 2013 Mutua Madrid Open. Sharapova was a 6-2, 7-5 winner over Sabine Lisicki, while the top-seeded Serena was a 6-3, 6-1 winner over Maria Kirilenko. Serena is now 25-1 on clay since the start of last year’s clay court season. "She’s the kind of opponent…

