Djokovic admits to 'worst tennis ever' in shock U.S. Open exit 0 0 Yesterday 05:02 The Japan Times (sports) The 37-year-old Djokovic, a four-time champion in New York, lost 6-4, 6-4, 2-6, 6-4 in the third round to 28th-ranked Alexei Popyrin of Australia.