Karen Khachanov makes it to the quarterfinals of the Australian Open.

Karen Khachanov makes it to the quarterfinals of the Australian Open.

Karen Khachanov easily reached the Australian Open quarterfinals after a strong performance against Yoshihito Nishioka on Sunday.

At the first major of the year, the 18th seed defeated the left-handed Japanese opponent 6-0, 6-0, 7-6(4). "You try to keep your focus throughout the match, even though it doesn't always go your way and sometimes goes up and down," Khachanov said. You're more likely to succeed, I believe, if you have self-assurance.

Khachanov is the 50th Open Era player to reach the quarterfinals at all four Grand Slam tournaments. He will next play either tenth seed Hubert Hurkacz or 29th seed Sebastian Korda.