Andy Murray revealed he was playing with an illness that was affecting “a few players” at the US Open.
That may have explained the Brit’s sluggish start in his 5-7 4-6 6-1 6-3 6-1 win over Frenchman Adrian Mannarino in the second round on Thursday.
Murray said illness was troubling several players despite the warm temperatures at Flushing Meadows.
“The beginning of the matches a little bit [it affects breathing]. But after the first couple games, feel fine really,” he told a news conference.
“But I think quite a few of the players have had, you know, sort of a head cold a little bit. My brother was quite sick yesterday, as well.
“I think there’s a few of the players have had it.”
Murray looked far from himself in the early stages on Arthur Ashe Stadium before he finally, as expected, outclassed Mannarino.
The third seed said he was delighted with his fight in the comeback win.
“Not relief. I’m proud of the way I fought. It was not an easy match to come through at all,” Murray said.
“He was making it extremely difficult for me, as well. Thought he played some really, really good tennis.
“He has such an unorthodox game; I didn’t really feel that comfortable at many points out there in the match.
“But, yeah, I was happy, very happy with the way I fought through that, you know, finished the match stronger than him.”