Jack Draper beat Andy Murray 7-6 (8-6) 6-2 in their first competitive meeting to reach the fourth round of the Indian Wells Masters.
The 21-year-old will now play US Open champion Carlos Alcaraz on Tuesday.
Draper was on Centre Court as an 11-year-old when Murray won Wimbledon for the first time in 2013 and has formed a strong bond with the Scot.
"If I was going to say one sporting person who has inspired me the most it would be Andy," Draper told BBC Sport.
"To come off court with the win against Andy - I'll never forget that moment.