Qualifier Siegemund stuns top seed Radwanska in Stuttgart

German qualifier Laura Siegemund caused a sensation, knocking out top seed and world number two Agnieszka Radwanska in straight sets on Saturday to reach the Stuttgart Grand Prix final. Siegemund, the world number 71, will meet Angelique Kerber in the tournament's first all-German final after the Australian Open champion ousted fifth seed Petra Kvitova 6-4 4-6 6-2. "I am overwhelmed and speechless," Siegemund, born and raised near Stuttgart, told reporters after claiming her third top-10 victim