British teenager Jack Draper wowed the returning home crowd by taking the opening set off Novak Djokovic before the defending champion reasserted his authority on day one at Wimbledon.
Draper was given a wildcard for his senior SW19 debut and stunned the Serb top seed with a confident start.
It was the first set that 34-year-old Djokovic had dropped in the Wimbledon first round since 2010.
But the five-time champion fought back to win 4-6 6-1 6-2 6-2 on Centre Court.
Djokovic will play either South Africa's Kevin Anderson - who he beat in the 2018 final - or Chilean qualifier Marcelo Barrios Vera in the second round.