Andy Murray said his winning return to Grand Slam competition was "emotional" as he proved his physical fitness matched his mental strength by fighting back from two sets down at the US Open.
He beat Yoshihito Nishioka 4-6 4-6 7-6 (7-5) 7-6 (7-4) 6-4 in the first round in his first singles match at a major since January 2019 after hip surgery.
"Right now I just feel tired," the 33-year-old Briton told BBC Radio 5 Live.
"I didn’t even know how my hip was going to hold up for a five-set match."
Injuries meant the former world number one was playing in the US Open for only the second time in four years.