Italy’s Roberta Vinci caused a huge shock as she beat Serena Williams at the US Open on Saturday to end the American’s hopes of a calendar Grand Slam.
Vinci, the world number 43 and playing her first Grand Slam semi-final, won 2-6 6-4 6-4 in New York.
Williams, 33, had been two wins from completing a clean sweep of all four majors in 2015.
Vinci, 32, will play Flavia Pennetta in an all-Italian final at Flushing Meadows on Saturday.
