The U.S. Open was rained out on Thursday night, forcing alterations to the schedule.
The women’s semifinals, which pit No. 1 Serena Williams against Roberta Vinci and No. 2 Simona Halep against Flavia Pennetta, will now begin at 11 a.m. ET on Friday. The matches were originally scheduled to begin on Thursday evening.
The men’s semifinals were pushed to 5 p.m. ET Friday. The men’s group features matches between No. 1 Novak Djokovic and Marin Cilic as well as between No. 2 Roger Federer and Stan Wawrinka.
Two wins stand between Williams and a calendar-year grand slam, a feat that hasn’t been completed by a female player since Steffi Graf in 1988. Williams has already won titles at the Australian Open, French Open and Wimbledon this year.
How to watch
Start time: 11 a.m. ET
Live stream: ESPN3
TV coverage: ESPN
Women’s Singles Semifinals:
No. 26 Flavia Pennetta (ITA) vs. No. 2 Simona Halep (ROU): 11 a.m. ET
No. 1 Serena Williams (USA) vs. Roberta Vinci (ITA): Immediately following first match
Men’s Singles Semifinals:
No. 1 Novak Djokovic (SRB) vs. No. 9 Marin Cilic (CRO): 5 p.m. ET
No. 5 Stan Wawrinka (SUI) vs. No. 2 Roger Federer (SUI): Immediately following first match