#USOpen 50 in 50: @flaviapennetta82. The 2015 US Open final featured an all-Italian matchup, with Pennetta prevailing. After raising her trophy, hugging #Vinci and waving to the fans in Arthur Ashe Stadium, she announced to the crowd that she was retiring at the end of the year. #USOpen50 _ #wta #tennis #sports #instatennis #FlaviaPennetta #instasports #instaitaly