Canadian teenager Denis Shapovalov eased to a 7-5, 6-4, 6-2 victory over Australian John Millman in his first ever main-draw French Open match on Tuesday.
The 19-year-old, who lost in Roland Garros qualifying last year but is now the 24th seed, was erratic at times but always had too much power for his opponent.
He will next take on German world number 70 Maximilian Marterer for a place in the last 32.
"The last couple of weeks I've been playing unbelievable on this surface," said Shapovalov.
"For now, every win here is a bonus, but in the future, winning Roland Garros would be a dream come true for me."