Serena Williams’s bid to reach her fourth grand slam final of the year will have to wait another day after her US Open semi-final against Roberta Vinci was postponed due to a forecast of heavy rain in New York.
The first semi-final, featuring Simona Halep and Flavia Pennetta, will now start at 11am ET (4pm BST) on Friday with Williams’s match following afterwards. Williams is attempting to become the first female player since Steffi Graf in 1988 to win the Australian Open, French Open, Wimbledon and US Open in a calendar year.
The postponements mean that the men’s semi-finals will now start at 5pm instead of 3pm on Friday. Novak Djokovic is first on court against Marin Cilic, while Roger Federer plays fellow Swiss Stan Wawrinka afterwards.
The women’s final is still scheduled to go ahead on Saturday afternoon.