Mats Wilander predicts when Novak Djokovic can surpass Roger Federer and Rafael Nadal

Will Djokovic win the French Open? (Picture: Getty)Mats Wilander is backing Novak Djokovic to win the French Open and believes he can surpass Roger Federer and Rafael Nadal in the all-time Grand Slam charts by the end of next season.
Djokovic, the world No. 1 from Serbia, has only suffered one defeat this season – a freak disqualification when hitting a line judge with a ball at the US Open – and enters Roland Garros in confident mood having won a record 36th Masters 1000 title in Ro