The scheduled night matches pairing Serena Williams against Roberta Vinci and Simona Halep against Flavia Pennetta will instead be played Friday morning, the USTA announced.
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The women’s matches will begin at 11 a.m. ET, with Halep vs. Pennetta on first — a reversal of the original Thursday night order.
The men’s singles semifinals pushed back from a 3 p.m. start to “not before” 5 p.m. Novak Djokovic will face Marin Cilic and Roger Federer meets countryman Stan Wawrinka in those matches.
For the women, the move eliminates a rest day between the semifinals and the final, which is scheduled for Saturday afternoon.