STUTTGART, Germany (AP) — Two-time defending champion Maria Sharapova needed eight match points to put away top-seeded Agnieszka Radwanska 6-4, 6-3 Friday for a place in the Porsche Grand Prix semifinals.
Sharapova has won 11 consecutive matches on Stuttgart's indoor clay. Her semifinal opponent will be eighth-seeded Sara Errani, who was leading 6-3, 6-7 (6), 3-0 when Carla Suarez Navarro retired with a hand injury.
"This was a big victory for me, the biggest since my injury," said Sharapova, who returned late last year after missing more than four months following shoulder surgery.
Ana Ivanovic outlasted 2009 Stuttgart champion Svetlana Kuznetsova 6-3, 2-6, 6-4 in a battle between two former French Open winners. Ivanovic is seeking her third title of the year and is the only player remaining in the tournament to have won an event this year.
Radwanska played her best tennis in the penultimate game, when she fought off six match points and finally broke Sharapova's serve. Under pressure from Radwanska, Sharapova made two straight backhand errors as she dropped her serve.
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