News In a clear signal of the importance that the Olympic Games now hold in the minds of the world's top tennis players, two-time Wimbledon champion Andy Murray and his biggest rival, Novak Djokovic, have pulled out of their respective Davis Cup teams, choosing instead to focus on gold in Rio Riding high on the back of his third Grand Slam win, world no 2 and reigning Olympic champion Murray will be looking to defend his title in Rio Britain's Davis Cup captain Leon Smith told the BBC: “He's got his eyes set on getting some rest and really making a big push for the Olympics, US Open and beyond Quite rightly he has to look after his body and his mind ” Murray beat Serbia's Djokovic in the semi-finals on the way to gold at London 2012 and looks to be taking every precaution so that he can repeat his Olympic success in Rio Old friends Novak Djokovic and Andy Murray on collision course in battle for Olympic gold In stark contrast to Murray, world no 1 Djokovic will come to Rio after a third-round exit from Wimbledon, his earliest in seven years "It’s been a very successful year so far, but a very long one, exhausting one, in every sense of that word I just need some rest and to get away from tennis,” he told journalists after the defeat Djokovic looks dejected after his early exit from Wimbledon (Photo: Getty Images/Adam Pretty) The 12-time Grand Slam winner has yet to add an Olympic gold to his impressive haul of titles, managing only bronze in Beijing On Djokovic's decision, Serbia Davis Cup captain Bogdan Obradovic said: “He has played so many times for us in the Davis Cup but he is not here this time because he is preparing for the Olympics and we have no issues with that "