'I Couldn't Win Slams Because Of Those Two': Novak Djokovic Makes HUGE Remark About Roger Federer-Rafael Nadal

With ace Swiss tennis star Roger Federer retiring from professional tennis two years back and Rafael Nadal nearing his farewell at this year's Davis Cup, Novak Djokovic's legendary rivalry with his contemporaries is nearing its end. Nadal will play his last professional match next month.