Novak Djokovic lost just one game in his Olympic tennis opener on Saturday to set up a potential blockbuster clash against old rival Rafael Nadal. Djokovic, chasing a first Olympic gold to add to his 24 Grand Slams, brushed aside Australia's Matthew Ebden 6-0, 6-1 in just 53 minutes under the roof of Court Philippe Chatrier. Nadal, who has been carrying a thigh strain, will take on Djokovic for the 60th time if he gets past Marton Fucsovics of Hungary on Sunday. Top seed Djokovic, whose Olympic career has only yielded a bronze at Beijing in 2008, holds a 30-29 head-to-head record over the Spaniard.