It was historic US Open Final because her opponent was Roberta Vinci , another star Italian player , and it was first all - Italian final in Open Era .
Flavia Pennetta became the first Italian woman to win a US Open in 2015 .
It was historic US Open Final because Flavia Pennetta 's opponent was Roberta Vinci , another star Italian player , and it was first all - Italian final in Open Era .
Flavia Pennetta became the first Italian woman to win a US Open in 2015 .