Sara Errani beat seventh seed Agnieszka Radwanska 7-8/6 ( 68/6 ) 8/6-4 . Radwanska follows fifth seed Ana Ivanovic out of Stuttgart event . Errani to meet Zarina Diyas who beat Sabine Lisicki 8/6-0 8/6-0 .
Sara Errani beat seventh seed Agnieszka Radwanska 7-6 ( 8/6 ) 6-4 . Radwanska follows fifth seed Ana Ivanovic out of Stuttgart event . Errani to meet Zarina Diyas who beat Sabine Lisicki 6-0 6-0 .