The top half of the draw still features No. 1 seed Rafael Nadal and No. 3 Roger Federer, who could meet in the semifinals. One possibility is that 18-year-old Canadian sensation Denis Shapovalov could make a deep run. Shapovalov, who qualified by winning three matches, knocked off No. 8 seed Jo-Wilfried Tsonga on Wednesday and then advanced to the second week when Brit Kyle Edmund retired with a neck injury, trailing 3-6, 6-3, 6-3, 0-1. “It’s never great to win this way, hopefully it’s too nothing serious,” Shapovalov said in his on-court interview. Shapovalov is making his run without his parents in his player box. His father is in Greece, and his mother is busy with other tennis responsibilities in Canada. “My dad’s in Greece on vacation, I’m not exactly sure when he comes back,” he said. “I think in a couple days. My mom, she’s actually very dedicated to her club. She’s very busy with her kids, so unfortunately she hasn’t been able to come out but hopefully I can force her to come to my fourth-round match.” Shapovalov next faces No. 12 seed Pablo Carreno Busta — the highest remaining seed in the bottom half — in the fourth round on Sunday. “He’s an unbelievable player,” Shapovalov said. “He’s another guy that’s been on tour for a while and he’s got a lot of experience. He plays big, he goes for his shots. It’s going to be a tough matchup but I’ve been playing some tough guys and I’ve been doing well so hopefully I can play well [on Sunday].” Shapovalov has now been installed as the third favorite behind Nadal and Federer to win the Open.Incredible tennis by Mischa Zverev as he defeats Isner to advance to R4, 6-4, 6-3, 7-6(5). #USOpen @MBUSA pic.twitter.com/g768VOkbkU
— US Open Tennis (@usopen) September 2, 2017
?? Nadal 6/4
— Mark Masters (@markhmasters) September 2, 2017
?? Federer 2/1
?? Shapovalov 14/1 https://t.co/azsHZnKQuU