French Open king Rafael Nadal faced an Italian young gun on the rise in the fourth round - and needed a bit of time to get going.
His trouble lasted all of eight games and less than 45 minutes before he seized control against 19-year-old Jannik Sinner.
A 7-5 6-3 6-0 victory ran Nadal's Roland Garros streak to 35 consecutive sets as he joined Novak Djokovic in reaching a record 15th quarter-final at the clay-court major tournament.
Third-seeded Nadal will face Diego Schwartzman for a place in the semi-finals - the Argentine he beat in the last four in 2020.
Earlier on Monday, Novak Djokovic found himself being outplayed by another 19-year-old from Italy but to hear the world No.1 afterwards, he had the kid right where he wanted him.
Which turned out to be true as the Serbian advanced when grand slam debutant Lorenzo Musetti retired due to lower back pain and cramps while trailing 6-7 (7-9) 6-7 (2-7) 6-1 6-0 4-0.
"I like to play young guys in best-of-five, because I feel even if they are leading a set or two sets to love, as it was the case today, I still like my chances because I feel like I'm physically fit and I know how to wear my opponent down," Djokovic, who is 34, said.
Djokovic's 49th major quarter-final will come against another Italian, Matteo Berrettini the ninth seed, who advanced without needing to swing his racquet due to Roger Federer's withdrawal from the event on Sunday.
Nadal, who turned 35 last week, trailed early against the 18th-seeded Jannik Sinner, who served for the first set at 5-4.
But 13-time French Open champion Nadal took eight games in a row and, after a blip in the second set, resumed his excellent play.
"He played better. That's all there is to say," Sinner summarised.
About the only thing that bothered Nadal down the stretch was that the stadium's artificial lights shouldn't have been switched on while there was still sunlight.
"They say it is because of the TV," Nadal said.
"But my answer is: We used to have TV before we had the lights on here in Roland Garros.
"I saw plenty of matches here - and from the TV, the quality of the image was great without the lights."
Djokovic's 49th major quarter-final will come against another Italian, No. 9 seed Matteo Berrettini, who advanced without needing to swing his racket Monday.
Schwartzman saved seven set points in the opening set on the way to eliminating Jan-Lennard Struff 7-6 (11-9) 6-4, 7-5.