The meeting lasted 3 hours 25 minutes and ended with a score of 2: 6, 6: 2, 6: 4, 6: 7 (2: 7), 2: 6.
In the quarterfinals, Wavrinka will play either with another Russian Andrei Rublev, or with the representative of Germany Alexander Zverev.
Wawrinka is the winner of the 2014 Australian Open.
Previously, the Austrian tennis player Dominic Tim first reached the quarter finals of the Australian Open.