Novak Djokovic, 37, chasing a record 25th Grand Slam title, won 6-4, 6-1, 6-2 and goes on to face either Gael Monfils of France or Italian 30th seed Lorenzo Musetti.
Fabian Marozsan held his nerve to beat veteran Gael Monfils in three sets on the opening day of the Auckland Classic.
Carlos Alcaraz battled through a rain interruption to claim his 50th win of the season, defeating Jordan Thompson 7-5, 4-6, 6-3 on Wednesday at the Cincinnati Open
Carlos Alcaraz won his 13th ATP match in a row as the world number one began the Toronto Masters by defeating Ben Shelton 6-3, 7-6 (7/3) on Wednesday.
Daniil Medvedev was sent crashing out of the ATP/WTA Indian Wells Masters in a stunning defeat to Gael Monfils that ended the Russian's three-week reign as world number one.
Australian Open: Matteo Berrettini edged past Gael Monfils to book a berth in the semi-finals.
The Spanish sixth seed edged the Canadian 14th seed 6-3, 6-4, 4-6, 3-6, 6-3 in 4hr 8min of thrilling action on Rod Laver Arena
Wimbledon 2021: France's Gael Monfils made serve-n-volley a bit classier with a ridiculous tweener in the second set of his first-round match against Australia's Christopher O'Connell.
France is captained by world number 55 Gilles Simon, and both Benoit Paire and Gael Monfils credited the 35-year-old with helping them overcome their opponents.
Roger Federer admitted he struggled to get past the talented Gael Monfils.