Watch: Novak Djokovic in tears during his first-round US Open defeat to Mariano Navone | Tennis News
Novak Djokovic gets emotional (Screengrabs) NEW DELHI: Novak Djokovic suffered a shock first-round exit at the US Open, losing to Argentina’s Mariano Navone in a gruelling five-set match.The 39-year-old struggled with physical problems and frustration throughout the contest, eventually losing 7-6 (5), 5-7, 4-6, 6-2, 6-1 after four hours and 36 minutes.Djokovic, a 24-time Grand…