She defeats Sara Errani to reach third straight Cincinnati Masters semifinal . Russian has won all four of her previous Wimbledon semis , but never won the final . Poland 's Radwanska is the defending champion , furthering the Russian 's Miami misery last year to add to previous final failures against Victoria Azarenka ( 2011 ) , Svetlana Kuznetsova ( 2006 ) and Kim Clijsters ( 2005 ) . Spain 's David Ferrer becomes first male semifinalist after overcoming Jurgen Melzer .
She defeats Sara Errani to reach third straight Cincinnati Masters semifinal . Russian has won all four of her previous Wimbledon semis , but never won the final . Spain 's David Ferrer becomes first male semifinalist after overcoming Jurgen Melzer .