Britain’s number one Johanna Konta outclassed eighth seed Venus Williams 6-4 6-2 to reach the second round of the Australian Open in Melbourne.
Konta, 24, raced to victory in 79 minutes as seven-time Grand Slam champion Williams, her left thigh heavily strapped, struggled.
“When the draw came out and saw who I was playing, I was just hoping to stay out there more than an hour,” she said.
Andy Murray also won but Dan Evans went out and Aljaz Bedene plays later.
Relive the action as Konta and Murray progress
Konta, who reached the last 16 at the US Open in 2015, will now face either Carina Witthoeft or Saisai Zheng, both unseeded, in the second round.
The world number 47, making her Australian Open debut, is the only British woman in the singles draw following Heather Watson’s defeat on Monday.
Beating a legend ‘still very much a blur’
The Briton, who described Williams as her idol before the match, moved her 35-year-old opponent around the court to take control.
Konta broke Williams twice in a 41-minute first set and then eased into a 5-0 lead in the second before the American rallied briefly.
But Konta held her nerve to secure a famous victory over the former world number one and 2003 Australian Open finalist.
“Right now it is still very much a blur,” added Konta, who lost in the first round at her two warm-up tournaments.
“I played two previous tournaments and I didn’t quite get the results I wanted but I have a very strong belief in the way I want to play out there and the way I way I want to be thinking, so I keep trying every day.”