Novak Djokovic out of U.S. Open to Mariano Navone on harrowing night for all-time great

Ailing Djokovic stunned in US Open first round by Navone

NEW YORK, Aug 30 : Novak Djokovic made his earliest exit at the U.S. Open after a shock 7-6(5) 5-7 4-6 6-2 6-1 loss to unseeded Argentine Mariano Navone in a gruelling first-round clash on Sunday, as his latest bid for…