Britain’s Andy Murray made his earliest Grand Slam exit of the year as Japan’s Kei Nishikori fought back to win their US Open quarter-final in five sets.
Murray, seeded second, led by two sets to one but eventually lost 1-6 6-4 4-6 6-1 7-5 in three hours 57 minutes.
The Wimbledon champion lost his rhythm after rain brought the roof across, then his cool when the stadium sound system interrupted a break point.
“It was too exciting on the court, but I tried to stay calm,” said Nishikori.
Sixth seed Nishikori, the 2014 runner-up in New York, goes on to face Stan Wawrinka who beat Juan Martin del Potro 7-6 4-6 6-3 6-2.
Nishikori added: “I didn’t start well – he has a great return – but I finished well.
In the other semifinal, world number one Novak Djokovic will take on Frenchman Gael Monfils.