Garbine Muguruza is through to the fourth round of the BNP Paribas Open at Indian Wells after Serena Williams retired from their match due to a viral illness.
The Spaniard, who won the French Open in 2016 and Wimbledon title two years ago, was leading 6-3 1-0 when Williams called it a day.
The veteran American player, who has won the tournament twice during her career, led 3-0 before Muguruza reeled off six straight games to take the first set.
The number 20 seed also won the first game of the second set before Williams decided to retire.
"I think she started playing well, right away with her serve, with her shots, being very dominating," Muguruza said after the match.
"I had to adapt a little bit my position in the court, the way I was hitting, and it took me a few games to kind of do it. Once I did it, I felt much more comfortable to be able to release my tennis.
"It's really a weird feeling, because I don't feel like I won the match point and, 'Well done, you know, good match.' It was just like, 'Man, we'll play next time.'
"I think I played well one set. I'm going to take the positive side of that. Now I have more chances to face top opponents. That's what I'm looking for."
Meanwhile, Muguruza is 1212/1 to win the BNP Paribas Open outright.
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