Roberta Vinci (Italian pronunciation: [roˈbɛrta ˈvintʃi]; born 18 February 1983) is an Italian tennis player. Up until 6 April 2015, she held the position of World No. 1 in doubles, whilst reaching a career-high of World No. 7 in singles in May 2016. She is the fourth Italian woman to have reached the top 10 in singles, together with Flavia Pennetta, Francesca Schiavone and Sara Errani. At 33 years and 4 days old, she is also the oldest ever player to make her first appearance in the Top 10.She rose to worldwide prominence at the 2015 US Open, when she reached the semi-finals and defeated world number one Serena Williams in three sets, ending Williams's hopes of winning the Calendar Grand Slam, in what has been described by numerous commentators as one of the biggest shocks in tennis history. She went on to lose to her childhood friend Flavia Pennetta in the first ever all-Italian Grand Slam final . Wikipedia