Murray has been stepping up his conditioning forward of the hardcourt season in preparation for the US Open with a "brutal" new coaching regime within the hopes that may be the sting in lengthy matches. “I imply, I received right here fairly early," he said ahead of the tournament. "We arrived on Tuesday night time, so yeah, try to get used to the humidity.

“Obviously I had numerous points final 12 months throughout American summer time with cramping and stuff like that. I wished to verify I received right here early to offer myself sufficient time to regulate to that. It's been good.

"So in preparation I was doing a lot of bike sessions. I put the bike in there and we can open the steam room a little bit to increase the humidity - obviously [turn on] the heaters to get the heat in the room up. Set it to like 35 degrees celsius and, like, 70 per cent humidity and then I would do my bike sessions in there."