Djokovic's US Open nightmare: Navone stuns tennis legend in first-round shocker
Novak Djokovic's bid for a record 25th Grand Slam title ended in stunning fashion at the US Open, where the four-time champion fell to unseeded Argentine Mariano Navone 7-6(5) 5-7 4-6 6-2 6-1 in a gruelling first-round encounter marked by physical struggles.