The meeting lasted 1 hour 38 minutes and ended with a score of 6: 1, 6: 2, 6: 4 in favor of the first racket of the world.
For reaching the quarterfinals, Nadal will compete either with Australian Nick Kiryos or with Russian Karen Khachanov.
Nadal is the winner of the 2009 Australian Open.
Earlier, Anastasia Pavlyuchenkova beat Karolina Plishkova and entered the fourth round of the Australian Open.