'I feel I'm back at square one': Andy Murray on US Open defeat - video

Andy Murray's US Open comeback came to an end in the second round at the hands of Canadian prodigy Felix Auger-Aliassime, prompting the former Wimbledon champion to admit he feels like he's 'back at square one'. 'Having not played in slams for a few years, I need to build up my body and my physical conditioning so that I have the ability to back up five set matches. And that takes takes a bit of time,' he said. 'I don't want to lose in straight sets anywhere and obviously certainly not in grand ...