PARIS — Roger Federer has not dropped a set at the French Open and eased into the quarterfinals with a 6-2, 6-3, 6-3 win against the unseeded Argentine Leonardo Mayer on Sunday.
With temperatures reaching 88 Fahrenheit (31 Celsius) on a sun-soaked center court, the third-seeded Federer was rarely troubled in beating Mayer for the fourth time in four meetings.
Federer has not played at Roland Garros since 2015, deciding to skip the clay season for health reasons until returning to the surface this year.
In his last French Open, four years ago, Federer lost in the quarterfinals to his Swiss countryman Stan Wawrinka in straight sets.
He will get a chance to make amends. On Tuesday, Federer will play Wawrinka, who outlasted the rising star Stefanos Tsitsipas, 7-6 (6), 5-7, 6-4, 3-6, 8-6, in the match of the tournament. It took 5 hours 9 minutes to complete.
The defending champion Rafael Nadal also went through to the quarterfinals, beating the unseeded Argentine Juan Ignacio Londero, 6-2, 6-3, 6-3, in their first meeting.
With Londero serving to stay in the match, the second-seeded Nadal won on his first match point with a booming forehand winner.
In reaching his 38th quarterfinal at a major, Nadal moved ahead of Roy Emerson into fourth place on the career list. Roger Federer leads with 54.
Nadal next faces either seventh-seeded Kei Nishikori of Japan or the unseeded Frenchman Benoît Paire.
The women’s quarterfinals got some fresh faces Sunday.
Petra Martic has followed up her win over second-seeded Karolina Pliskova by rallying past Kaia Kanepi, 5-7, 6-2, 6-4, to reach her first Grand Slam quarterfinal.
The 31st-seeded Martic had entered with an 0-4 record in the fourth round at majors — first reaching the last 16 at Roland Garros seven years ago.
With both players trading moon balls late in the tense third set, Martic ran down a drop shot and responded with a forehand winner up the line to break for a 5-4 lead, then converted her first match point in the next game.
Martic next plays 19-year-old Marketa Vondrousova, who has reached her first Grand Slam quarterfinal without dropping a set.
She beat 12th-seeded Anastasija Sevastova, 6-2, 6-0, in only 59 minutes.
The only two games that Vondrousova lost came immediately after she took a medical timeout to receive treatment for an apparent cut on a finger of her left hand — her playing hand — while leading by 3-0 in the first. She appeared to pick up the cut when she slipped and fell to the clay in the previous game.
Vondrousova improved to 25-5 since exiting the Australian Open in the second round — a stretch that includes finals in Budapest and Istanbul.
Also advancing to the quarterfinals was 26th-seeded Johanna Konta, who beat 23rd-seeded Donna Vekic, 6-2, 6-4.
Although Konta had reached two Grand Slam semifinals, at the Australian Open in 2016 and at Wimbledon in 2017, she had never been past the first round at Roland Garros in four previous appearances.
Konta’s quarterfinal opponent will be either the 2016 champion, Garbiñe Muguruza, or the 2017 United States Open champion, Sloane Stephens.