Novak Djokovic and Rafael Nadal meet for the 56th time on Sunday in the French Open final. AFP Sport looks at six of their best Grand Slam matches: When Djokovic won: 2012 Australian Open final Djokovic 5-7, 6-4, 6-2, 6-7 (5/7), 7-5 — In the longest ever Grand Slam final at five hours and 53 minutes, […]