Roger Federer missed French Open in 2016 with an injury and skipped the clay season the last two years.
Roberto Bautista Agut will face Stefanos Tsitsipas for a place in the semifinals.
Stefanos Tsitsipas became the first Greek in history to reach the quarterfinal of a Grand Slam.
Roger Federer is currently vying for his 21st Grand Slam title at the Australian Open.
Virat Kohli led India to their first bilateral ODI series win in Australia.
Roger Federer will continue his quest for a record seventh Australian Open title against Greek 14th seed Stefanos Tsitsipas in the last 16.
Novak Djokovic defeated Jo-Wilfried Tsonga 6-3, 7-5, 6-4 in straight sets.
Roger Federer is working towards a third successive Australian crown and a 21st major victory.
The 37-year-old Swiss master made light of his assignment on Rod Laver Arena, wrapping up the match 6-3, 6-4, 6-4.
Rafael Nadal is bidding to become the first man in the Open era, and only third in history along with Roy Emerson and Rod Laver, to win each Grand Slam on two or more occasions.
Roger Federer and Novak Djokovic are both gunning for a record seventh Australian Open crown.
Andy Murray said he would like to finish at his home Grand Slam in Wimbledon, but ruefully admitted he might not make it that far.
Novak Djokovic will start his drive to make history against a yet-to-be-decided qualifier and could meet France's Jo-Wilfried Tsonga in the second round.
Simona Halep takes the top seeding among the women courtesy of her world number one ranking.
To win the decisive tie-break, a player will need to be the first to 10 with an advantage of at least two points.
Roger Federer will be aiming for a third successive Australian Open.
Roger Federer became the first player to win three Hopman Cups, teaming with Belinda Bencic for the duo's second consecutive title.