Canadian Open 2025: Top seed Zverev, defending champ Popyrin book quarterfinal spots New

Top-seeded Alexander Zverev set up a Canadian Open 2025 quarterfinal against defending champion Alexei Popyrin after his fourth-round opponent, Francisco Cerundolo, was forced to retire with an abdominal injury on Saturday.

Germany’s Zverev secured a 6-4, 1-0 victory, with Argentina’s Cerundolo taking a medical timeout after the fifth game and finally calling a halt after less than an hour on court.

Australia’s Popyrin won his ninth straight match in Canada, beating ninth seed Holger Rune 4-6, 6-2, 6-3.

The 26th-ranked Aussie profitted from nearly 40 unforced errors from his Danish opponent, who has been taking occasional advice from Andre Agassi.

With Popyrin on the horizon, Zverev said he was headed back to the practice court after his abbreviated victory, but he paid tribute to Cerundolo first.

“He’s an incredible player, we have a close personal relationship. I know about abdominal injuries,” Zverev said of Cerundolo.

“You can’t serve or accelerate on the forehand. He had tears in his eyes when he had to quit. He didn’t want to disappoint the crowd. But they can last from a few days to a few months. I have respect for him – he beat me three times before tonight,” he added.

Zverev, the 2017 champion, will be playing his fifth quarterfinal in seven Canadian appearance.

Earlier, Popyrin saved a break point with his sixth ace against Rune as he served for victory in the final game, finishing the job with a lob winner which left Rune flat-footed.

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“This win means a lot,” the Aussie said.

“I started the week not high on confidence but I knew my game was there. I just let go of the pressure and it worked out for me,” added Popyrin, who said dropping the first set did not sit well. I told myself to keep going and managed to play aggressively on the next break point that I got. From then on I felt much more comfortable,” he added.

Khachanov Topples Ruud

Karen Khachanov reached his second straight prestige quarterfinal, ambushing eighth seed Casper Ruud 6-4, 7-5 to continue his ATP hot streak.

Khachanov next faces Alex Michelsen, who claimed his first Masters last-eight place with a 6-3, 6-3 victory over fellow American and good friend Learner Tien.

Khachanov was playing his first tournament since reaching the Wimbledon quarterfinals last month.

The world number 16 reeled off 18 straight points on serve over the first and second sets and produced love games in his final two service games of the match.

Norway’s Ruud, playing his second event after skipping Wimbledon because of injury, was never able to gain control, although he rallied from 4-2 down in the second set to level at 4-4 before Khachanov got back on track.

“I had nothing to complain about until this point,” Khachanov said.

“I tried to control play and my game plan was working, especially with the first serves. It became difficult, but I’m super-glad I was able to put everything together at the end and finish the match,” he added.

Michelsen took full advantage of 42 unforced errors from Tien to close out their match in 81 minutes.

“It feels really good,” the 20-year-old winner said. “It’s uncharted territory from now on. I’m super-happy to be in the quarters.”