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Top-ranked Novak Djokovic dispatches Stan Wawrinka 6-4, 6-1 to reach Western & Southern semis

  • Novak Djokovic, of Serbia, returns the ball to Stanislas Wawrinka, of Switzerland, during a quarterfinal match at the Western & Southern Open tennis tournament, Friday, Aug. 21, 2015, in Mason, Ohio. (AP Photo/John Minchillo)

    Novak Djokovic, of Serbia, returns the ball to Stanislas Wawrinka, of Switzerland, during a quarterfinal match at the Western & Southern Open tennis tournament, Friday, Aug. 21, 2015, in Mason, Ohio. (AP Photo/John Minchillo)  (The Associated Press)

  • Stanislas Wawrinka, of Switzerland, serves the ball to Novak Djokovic, of Serbia, during a quarterfinal match at the Western & Southern Open tennis tournament, Friday, Aug. 21, 2015, in Mason, Ohio. (AP Photo/John Minchillo)

    Stanislas Wawrinka, of Switzerland, serves the ball to Novak Djokovic, of Serbia, during a quarterfinal match at the Western & Southern Open tennis tournament, Friday, Aug. 21, 2015, in Mason, Ohio. (AP Photo/John Minchillo)  (The Associated Press)

  • Stanislas Wawrinka, of Switzerland, returns the ball to Novak Djokovic, of Serbia, during a quarterfinal match at the Western & Southern Open tennis tournament, Friday, Aug. 21, 2015, in Mason, Ohio. (AP Photo/John Minchillo)

    Stanislas Wawrinka, of Switzerland, returns the ball to Novak Djokovic, of Serbia, during a quarterfinal match at the Western & Southern Open tennis tournament, Friday, Aug. 21, 2015, in Mason, Ohio. (AP Photo/John Minchillo)  (The Associated Press)

Top-ranked Novak Djokovic advanced to the Western & Southern Open semifinals by dispatching fifth-seeded Stan Wawrinka 6-4, 6-1 in their quarterfinal match on Friday.

Djokovic, who lost to Wawrinka in the French Open final, will play either sixth-seeded Tomas Berdych or qualifier Alexandr Dolgopolov in the semifinal on Saturday.

Djokovic, the reigning Australian Open and Wimbledon champion, has never won a W&S championship. He is hoping to become the first man to win all nine ATP Masters 1000 championships in his career.

Wawrinka committed 27 unforced errors to eight for Djokovic, who needed just 63 minutes to improve to 18-4 in his career against Wawrinka.