Novak Djokovic ended his eight-year absence at the Fever-Tree Championships at Queens on Tuesday as he made a winning return with straight sets victory over John Millman of Australia.
The Serbian dispatched his opponent 6-2 6-1 in one hour and five minutes to setup a meeting with second seed Grigor Dimitrov.
It was a 15th win of the season for Djokovic who is back to form having missed the better part of the last few years with injury.
The tournament is expected to serve as part of preparations for the forthcoming Wimbledon Open scheduled for next month.
The former world number one was a finalist at Queens in 2008 and has previously won SW19 on three occasions.
His next opponent Grigor Dimitrov survived a second set scare from Damir Dzumhur of Bosnia and Herzegovina before winning 6-3 6-7(4) 6-3
Leonardo Mayer, Yuki Bhambri and Frenchman Jeremy Chady are also through to the last 16.
Argentine Mayer stunned third seed Kevin Anderson of South Africa 7-6(4) 4-6 7-6(3), while Indian Bhambri benefited from Canadian Milos Raonic’s inability to continue because of injury.
Raonic had won the first set 6-1 and was leading 3-1 in the second set before he retired from court.
Chardy also defeated American player Tim Smyczek 6-2 6-4 in their last 32 clash.