The 21-time major champion shook off a left hamstring issue in the first set to advance, 6-3, 6-4, Saturday evening. Sebastian Korda awaits the Serbian.

"Don't be shy, and just go for it," said the Korea Open champion. "That's very, very big for Asian tennis players."

Meanwhile, Taylor Fritz is now one spot away from the Top 10, and Rajeev Ram becomes No. 1 in doubles.

The 27-year-old Japanese also beat top seed and world No. 2 Casper Ruud in the quarterfinals.

It's hard to believe that some of today's top pros once had to qualify—and often together.

Meanwhile, Daria Kasatkina returns to the Top 10—and even sets a new career-high—after winning San Jose.

Reviewing performances from three of the game's latest champions, and what their title runs may mean.

The Wimbledon runner-up eased past surprise finalist Yoshihito Nishioka in straight sets to win his second title in Washington, D.C.

Nishioka has had one heck of a week in D.C., and we think he can finish it off by pushing the red-hot Kyrgios a bit.

The Russian will play Rafael Nadal next in a rematch of their historic Australian Open final.