The world number four beat Spain's Pedro Martinez by 6-3 6-2 6-2.
Novak Djokovic has gotten his pursuit of a 25th Grand Slam title at the Australian Open off to a winning start.
The world number four beat Spain's Pedro Martinez by 6-3 6-2 6-2 to notch up his 100th victory at the venue.
Elsewhere, Australian Alexei Popyrin lost the deciding set to Alexandre Muller of France.
While, Iga Swiatek survived a scare against Chinese qualifier Yue Yuan (pr: Yoo-ay yoo-on) to win in straight sets.
Big names Coco Gauff, Alex de Minaur and Daniil Medvedev also progress.
Under 21's Republic Of Manager Has Full Faith In Teams Abilities
Wednesday's Sport Update
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Novak Djokovic Wins His First Tennis Title Of The Year
Tuesday Morning Sports Update
Jamison Gibson-Park Returns To Training With Leinster
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