Young Canadian stars Denis Shapovalov and Felix Auger-Aliassime made this debut at the Toronto Masters on Wednesday and the duo combined to win zero sets.

Shapovalov, who has made his first Slam semifinal at Wimbledon, was ousted by American Frances Tiafoe 6-1, 6-4.

Shapovalov has lost his last three matches since his Wimbledon quarterfinal win over Karen Khachanov.

Shapovalov had won his last four over Tiafoe but never saw a break in the one-sided affair. Tiafoe only made the draw as a lucky loser after countrywoman Sebastian Korda withdrew.

“This is the sixth time we have played. It’s not too crazy,” Tiafoe said. “I came with a much more relaxed approach the last couple times we played. You know, joking with him before the match. Was much more serious today. I really wanted to win. I definitely approached it in a different way.

“It was just my night tonight.”

Tiafoe will now meet Gael Monfils who rallied from a set down to beat John Millman.

Auger-Aliassime’s day wasn’t much better. After turning 21 on Sunday, Auger-Aliassime was ousted at Dusan Lajovic 7-5, 6-4. Auger-Aliassime tossed in 36 unforced errors in just two sets to 14 winners in the loss. He has now lost four of his last five.

“If you look at the match overall, especially in the second set, I felt like I had chances where I could have done better to get a break, to give myself a chance of maybe going three sets, but it is what it is,” Auger-Aliassime said.

Lajovic will meet the streaking Casper Ruud today.

“I’m happy with the way that I was able to play from the beginning until the end,” Lajovic said. “The game at 4-3 in the second set when I was serving was a really tricky one. I’m happy that I had a little bit of luck in some moments but the most important thing was that was able to control the match and the way that I was able to make him uncomfortable.”

Elsewhere, John Isner came from a set down to deny Cristian Garin 4-6, 6-3, 6-4. Isner smacked 21 aces in the win. Up next, he’ll take his 7-match win streak against Andrey Rublev today. Rublev advanced past Fabio Fognin 7-6(3), 6-4.

“It’s always super tough against Fabio. He’s super talented and you know how great he can play,” Rublev said on court. “He’s beaten so many great players, so I knew it was going to be really tough, especially it was my first match and he already played the first round, so he was feeling a bit more comfortable than me.”

Karen Khachanov continued his good form easing past countryman Aslan Karatsev. He’ll face today Stefanos Tsitsipas who celebrates his 23rd birthday.

James Duckworth upset Jannik Sinner and Hubert Hurkacz advanced without striking a ball when Kei Nishikori withdrew due to a right shoulder issue.

“I am disappointed to announce that I have decided to withdraw from my match today,” Nishikori said. “The right shoulder is very sore after a long stretch of tennis and I do not want to risk further injury. I now spend my focus on getting healthy back on court again.”

THURSDAY CANADIAN OPEN TORONTO SCHEDULE
Stadium Starts At 11:00 Am
R16 Karen Khachanov 3 Stefanos Tsitsipas
R16 4 Andrey Rublev John Isner
R16 8 Diego Schwartzman 10 Roberto Bautista Agut
Not Before 7:00 Pm
R16 1 Daniil Medvedev (Q) James Duckworth
R16 Nikoloz Basilashvili 7 Hubert Hurkacz