article_snippet.sent: Angelique Kerber upset three-time defending champion Maria Sharapova 2-6, 7-5, 6-1 in the second round of the Porsche Grand Prix on Thursday.
article_snippet.sent: Top seed Maria Sharapova was beaten in three sets byAngelique Kerber Angelique Kerber Germany .
article_snippet.sent: Angelique Kerber fought back from losing the first set to oust Sharapova at the Porsche Grand Prix .
highlights_snippet.sent: Maria Sharapova lost to Angelique Kerber in Stuttgart on Thursday .
  