Finch backed Warner to be his opening partner at the T20 World Cup to be played in Oman and UAE from October 19, despite Warner being dropped by Sunrisers Hyderabad in the IPL this year.
Martin Pakula said he was very confident of the first Grand Slam tournament of 2022 proceeding at Melbourne Park from Jan.17-30.
Barty, seeded 15, saw off the unseeded Sakkari 7-5, 6-1 in 82 minutes to reach the last 16, her best performance at Melbourne Park after third round appearances in 2018 and 2017.
Yuki Bhambri featured in the men's singles main draw of all three Grand Slams of the season so far but is yet to win a match.
Nadal, 16-times grand slam champion, withdrew from the Australian Open in January after reaching the last eight due to an upper quad problem.
The 2016 winner from Germany and 21st seed roared past the unseeded Russian 2008 champion 6-1, 6-3.
The powerful Japanese 20-year-old took the first set against the 18th seed before racing to a 4-0 lead in the second on the back of an impressive serve.
Chung Hyeon became the first South Korean man ever to reach the round of 16 at the Australian Open with a five-set win over fourth seed.
Thiem downed the 26th-seed 6-4, 6-2, 7-5 in 2hr 8min on Margaret Court Arena and will face either German Maxmilian Marterer or American Tennys Sandgren for a place in the quarter-finals.
Ostapenko dropped her serve twice before winning a see-saw opening set 6-3 but the Chinese world number 100 bounced back to take the second by the same scoreline.
Spain's world No.1 only dropped serve once as he reeled off a 6-3, 6-4, 7-6 victory over the 52nd-ranked Argentine in 2hr 38 min on Rod Laver Arena.
The 89th-ranked Croat needed over four-and-a-half hours in stifling heat before extinguishing the No.41 ranked Yuichi Sugita.
The 15th seed looked dead and buried trailing 2-5 in the final set before 18-year-old Shapovalov faltered and the experienced Frenchman seized the initiative.
Cilic, last year's Wimbledon finalist, downed the 70th-ranked Sousa 6-1, 7-5, 6-2 and will next play either American Ryan Harrison or Pablo Cuevas of Uruguay.
The Danish number two seed somehow prevailed after a titanic struggle 3-6, 6-2, 7-5 against the world number 119 on a searing Rod Laver Arena in two hours and 31 minutes.