NEW YORK — Andy Murray was the trendy pick of many tennis experts to win the US Open.
After all, the 29-year-old Scot won both Wimbledon and the Olympics — for a second time each — this summer, and he appeared to be on a roll coming into Flushing Meadows.
But No. 6 Kei Nishikori slowed No. 2 Murray’s roll with a five-set upset in the quarterfinals, 1-6, 6-4, 4-6, 6-1, 7-5, in a match that lasted 3 hours, 58 minutes.
There were five breaks in the fifth and final set, with the Japanese scoring the most significant one to go ahead 6-5. The 2014 runner-up then held his nerve and closed out Murray on his own serve.
Nishikori will meet the winner between No. 3 Stan Wawrinka and unseeded wildcard Juan Martin del Potro in Friday’s semifinals, with No. 1 Novak Djokovic to face No. 10 Gael Monfils in the other.