Defending champion Novak Djokovic has progressed to the third round after defeating Japanese wildcard Tatsuma Ito in Melbourne.
The Serb, who won 6-1, 6-4, 6-2 in one hour and 35 minutes, will now face Yoshihito Nishioka, who had crushed British number one Dan Evans in straight sets.
Sixth seed Stefanos Tsitsipas also reached the third round after opponent Philipp Kohlschreiber withdrew injured.
He will face Canadian Milos Raonic or Cristian Garin of Chile in the third round.
Sabalenka withdraws from Stuttgart Open due to injury
Aryna Sabalenka has pulled out of this month's Stuttgart Open due to an injury she sustained following her Miami Open triumph in March, the world number one said on Thursday.
Atletico beat 10-man Barca as PSG defeat Liverpool
Atletico Madrid took a firm grip on their Champions League quarter-final as goals from Julian Alvarez and Alexander Sorloth earned a 2-0 first-leg victory over 10-man Barcelona at the Camp Nou.
UAE Team Emirates-XRG claim second place on stage 3 of Itzulia Basque Country
Igor Arrieta has ridden to second place on stage 3 for UAE Team Emirates-XRG during a thrilling finale at Itzulia Basque Country,
Home hero Vacherot thrilled to beat Musetti in Monte Carlo
Monaco's Valentin Vacherot could barely have scripted his second career win over a top-five player better after he defeated world number five Lorenzo Musetti 7-6(6) 7-5 in front of a joyous home crowd at the Monte-Carlo Masters on Wednesday.
Gujarat survive IPL final-over chaos as Miller's gamble backfires
Gujarat Titans survived a ferocious late assault from David Miller to clinch a nerve-shredding one-run win over Delhi Capitals in an Indian Premier League (IPL) thriller on Wednesday.
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