Thursday 8 September 2016 12:03, UK
Andy Murray admits recovering from his US Open heartache will be difficult before next week's Davis Cup semi-final against Argentina.
Murray was favourite to claim his fourth grand slam title in Flushing Meadows but was beaten 1-6 6-4 4-6 6-1 7-5 by Kei Nishikori in the last eight of the tournament.
The world No 2 must now turn his attention to Britain's crunch Davis Cup tie with Argentina, which is likely to involve him playing two singles rubbers, as well as doubles.
Murray has eight days to fly home and recuperate ahead of the contest in Glasgow and says he will have to make the most of his time off.
"Obviously I'll look forward to the match. It should be a great, great atmosphere, a great occasion," Murray said.
"I would like a little bit more time off, which obviously I will get when the Davis Cup is done, but I just need to be smart in the next few days because I need a lot of energy for those ties.
"Davis Cup does take a lot out of you over the weekend. It's tough, especially if you play all three days.
"I'll need to be smart the next few days to make sure that I recover not only physically, but mentally as well, because it's always a stressful few days."
Murray's five-set defeat to Nishikori was particularly galling. He twice led the Japanese by a set and his downfall was at least partly of his own making.
The British No 1 lost seven games in a row after his break point in the fourth set had to be replayed due to a loud noise from the stadium's malfunctioning sound system. Murray reacted angrily and lost focus.
However, the 29-year-old has enjoyed a superb summer, winning Wimbledon, an Olympic gold medal in Rio and reaching seven consecutive tournament finals.
"I have not let anyone down. I tried my best. I fought as hard as I could with what I had," Murray said.
"I pushed myself as hard as I could over the last few months and I'm very proud of how I have done.
"If someone had offered me the summer that I have had before Wimbledon, I probably would have signed for that.
"I'm not going to have the best perspective on things right this minute but after a few days away, I would imagine I'd be very happy with how I have done."
