London, July 1 -- British number one Emma Raducanu said she would give her coach Mark Petchey an "11 out of 10" after she secured a comfortable victory over compatriot Mimi Xu to progress to the second round at Wimbledon.
Raducanu swiftly wrapped up the 6-3 6-3 win against 17-year-old Xu on Monday, who was making her maiden Grand Slam appearance.
The Welsh teenager showed glimpses of the potential that earned her a wildcard in this year's main draw at SW19.
But Raducanu quickly settled into her rhythm on Court One and showcased some of the free-hitting style she has enjoyed at the grass-court warm-up events.
The 22-year-old has previously struggled to settle on a coach but brought Petchey - a well-known figure in British tennis circles ...