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It was Daley Thompson, the double Olympic decathlon champion, who famously used to train on Christmas Day, believing it would give him that slight edge over his rivals. Andy Murray may not be quite so regimented in his thinking but the world No 4 is so determined to get his preparations right for 2010 that he is even foregoing his traditional Christmas at home in favour of training in Miami over the festive period.
The 22-year-old will spend all of December training, though whether he actually works out on Christmas Day is still up for discussion. "I don't know, it depends if I fancy it or not," he said at the Valencia Open, where he is due to play Fernando Verdasco in the semi-finals of his first tournament back after six weeks out because of a left wrist problem.
"I don't think one day's training on Christmas Day makes that big a difference. If you're spending Christmas away from your family, I think that's a big enough sacrifice in itse