Taylor Fritz advanced to the Japan Open semifinals after Nick Kyrgios withdrew because of a left knee injury on Friday.
Kyrgios’ knee injury also forced him to withdraw from the doubles semifinals, where he and partner Thanasi Kokkinakis were scheduled to play Mackenzie McDonald and Marcelo Melo.
Fritz, who spent a week in quarantine after testing testing positive for COVID-19 in Seoul last week, will next face Denis Shapovalov. The seventh-seeded Canadian defeated Borna Coric 6-4, 6-3.
Frances Tiafoe reached the semifinals by beating Miomir Kecmanovic 6-0, 6-4. Tiafoe, who has not dropped a set in Tokyo, will be making his fourth semifinal appearance this season.
“I was moving really well. I hit the ball well from the back of the court,” Tifoe said. “I made it really tough for Miomir today. He played some great tennis. I was lucky enough to get it done in straight sets. Performances like this are big.”
Tiafoe will next take on Kwon Soon-woo. The South Korean defeated Pedro Martinez 6-3, 6-0.