The US Open women's semi-finals scheduled for Thursday night have been postponed to Friday as a result of heavy rain.
The matches will now take place at 11am local time on Friday.
Second seed Simona Halep will face Flavia Pennetta before world number one Serena Williams takes on Roberta Vinci.
The men's semi-finals will start from 5pm local time on Friday.
Roger Federer takes on countryman Stan Wawrinka after top seed Novak Djokovic faces defending champion Marin Cilic.