Flavia Pennetta (ITA) Ladies semifinal: Flavia Pennetta (ITA) defeated Petra Kvitova (CZE) 4-6 6-4 6-2 in 2 hours and 23 minutes Tennis - 2015 US OPEN - Grand Slam ATP / WTA - USTA Billie Jean King National Tennis Centre - NEW YORK - NY - USA - 9 September 2015.