Novak Djokovic, Andy Murray and Rafael Nadal Djokovic has not lost a match since the US Open and is likely to be on the winning team in the Davis Cup, where his Serbia face the Czech Republic. He has also seen off the world number one handilly in their last two encounters, setting him promisingly for next season. He may have won (and played) far fewer games than Nadal and Djokovic, but it's also impossible to rule out Andy Murray in the final shake-up. He failed to retain his US Open title, but won the tournament which really mattered to his fans and British tennis-enjoyers at Wimbledon. Does that make him a worthy winner of this prestigious prize? Have a vote in our poll, and your say in the comments section: Which tennis player has had the best 2013?