Defending champion Iga Swiatek has held off a fierce challenge from Ukraine's Marta Kostyuk to reach the French Open quarter-finals.
Swiatek prevailed 6-3 6-4 over to make it 22 consecutive sets at Roland Garros.
The eighth-seeded Pole's next opponent is Greek 17th seed Maria Sakkari as she bids to become the first woman to retain the slam title in Paris since Justine Henin in 2007.
A week after her 20th birthday, Swiatek is in the unexpected position of being the most experienced player in the last-eight in terms of slam success, having won her maiden title here last year.
Against an 18-year-old opponent who threw everything at her on Monday evening, Swiatek kept her composure on an empty court Philippe Chatrier, with fans not allowed to attend due to Paris's 9pm COVID-19 curfew.
"There were so many differences (from a day match)," Swiatek said.
"It was hard for me to adapt. The light are really bright and I had to adjust, sometimes I was facing the lights when I had to smash, it was hard."
Kostyuk, who had not dropped a set in powering through the first three rounds, piled on the pressure early on to put Swiatek on the back foot and earn an early break.
An unfazed Swiatek, however, broke straight back before gaining the upper hand in the eighth game when Kostyuk's attempted backhand down the line went wide.
The Pole served out to take the lead after a hugely competitive set in which she faced five break points.
Swiatek capitalised on her opponent's errors to break for a 2-1 lead in the second, only for Kostyuk to level at 2-2.
The decisive break for Swiatek came in the seventh game when Kostyuk netted a sliced forehand while attempting to retrieve a lob.
Swiatek sealed the win on her second match point.
Sakkari advanced with a comprehensive 6-1 6-3 victory over fourth-seeded Sofia Kenin.
Meanwhile, the 17-year-old Coco Gauff completely overwhelmed Ons Jabeur 6-3 6-1 to become the youngest woman to reach the quarter-finals at any slam tournament since 2006.
She will play Barbora Krejcikova who dominated Sloane Stephens 6-2 6-0.
Swiatek and Anastasia Pavlyuchenkova are the only players in the last eight with slam quarter-finalist experience.