Paris [France], May 31 (ANI): The 24-time Grand Slam champion Novak Djokovic reflected on the challenges he faced while playing against the 14-time French Open champion Rafael Nadal and hailed the tennis great Spaniard as his “greatest-ever rival.” The Serbian has faced the Spaniard 59 times, which is 19 more than Nadal and Roger Federer combined. Djokovic heaped accolades on Nadal and the Serbian believes that one of the most challenging aspects of winning Roland Garros was having to face the ‘King of Clay’ Nadal. Djokovic, the top seed in Paris for the next two weeks, is hoping for his fourt…