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.
Tuesday Morning Sports Update
All Ireland Football Championship Opening Round Fixtures Confirmed
Tommy O'Brien Among Injury Doubts For Leinster's Champion Cup Final On Saturday
Monday Morning Sports Update
Sunday Evening Sports Update
Mourinho's Benefica Go Unbeaten but Miss Title
Brave Kildare Fall Short in Leinster Ladies Final
Chelsea Appoint Xabi Alonso as New Manager
