US Open 2013: Andy Murray takes day off in New York to avoid fatigue as he prepares for title defence The scheduling is not ideal, as to successfully retain his title, Murray would probably have to squeeze seven five-set matches into 13 days. Whereas Rafael Nadal and Roger Federer - who both start today - will have an extra two days" grace. He fell to eventual winner Nadal in a French Open semi-final and to Murray in last month's Wimbledon final. You go through these periods. But my confidence is still there. This is a grand slam, so it is different from any other event. When I play Rafa, Roger, Andy, it's very few points that really decide a winner. You can't really say who is the clear favourite, because it always goes down to the wire who is going to win it. That's the beauty of the sport. That's the beauty of the rivalries we have at the present moment.