Andy Murray advances with Serena Williams but puts singles return on ice

Andy Murray said it is pretty unlikely he will return to singles after he and Serena Williams powered past Fabrice Martin and Raquel Atawo 7-5, 6-3 in the mixed doubles at Wimbledon Do not be mistaken: behind Andy Murrays new smiley on-court demeanour lurks the spirit of a champion. He still yearns to feel the heat of competition at the highest level of mens tennis again and has seen nothing during his time away from the tour to make him think he is incapable of challenging Roger Federer, Novak Djokovic and Rafael Nadal. By the same token, however, the former world No 1 acknowledges he has a different perspective on triumph and despair six months after career-saving hip surgery. Murray …