Andy Roddick thinks Novak Djokovic made the right thing by taking a Geneva wildcard and the American tennis legend warns the competition not to sleep on the Serb because he could easily turn around the situation any moment.

Recent reports indicate that Novak Djokovic would have his replacement for Andy Murray as his new coach ready: none other than Viktor Troicki, the current Serbian Davis Cup captain.

The novelty and almost unprecedented nature of having two such recent former adversaries teaming up was always going to be a major sideshow