Denis Shapovalov has worked the late-night shift to reach the quarterfinals at the Miami Open.

The 19-year-old Canadian left-hander beat 20-year-old Greek Stefanos Tsitsipas 4-6 6-3 7-6 (7-3) in a match that started following a two-hour rain delay and ended shortly after 1:30am (local time) on Wednesday morning.

The match was extremely close with both players winning 100 points.

It also offered a peek at the future of men’s tennis, with Shapovalov seeded No.20 and Tsitsipas the eighth seed.

“I knew Stefanos was going to be a tough match,” Shapovalov said.

“I was ready for a long battle and, sure enough, it went the distance. I’m just happy with the way I controlled myself.”

It is the second time Shapovalov has beaten a top 10 opponent in his career.

He’ll next play 28th seed Frances Tiafoe, who eliminated David Goffin on Tuesday night 7-5 7-6 (8-6).

“We’re both shotmakers,” Shapovalov said.

“I’m just ready for another fun, tough match.”