The Serbian dropped just three games in a straight sets victory over Adrian Mannarino.
Novak Djokovic is safely through to the quarter finals at the Australian Open.
He dropped just three games in a straight sets victory over Adrian Mannarino.
Elsewhere overnight, there were wins for Taylor Fritz and Jannik Sinner.
On course at the moment, it's one set apiece between Alex De Minaur and Andrey Rublev.
Coco Gauff is through to the quarter finals in the women's singles, after a straight sets win over Magdalena Frech.
Aryna Sabalenka, Marta Kostyuk and Barbora Krejcikova are also into the last eight.

Kildare SF Team (one late change) vs Wexford
Brighton Have Re-Signed Midfielder Pascal Gross
Bournmouth Sign Experienced Goalkeeper Fraser Forster On A Short-Term Contract
Crystal Palace Complete The Club Record Signing Of Brennan Johnson From Tottenham
It's The Women's National Cup Semi Finals Weekend
Donadea's Will Connors To Start For Leinster In Saturday's Clash Against Connacht
Liam Rosenior Named Leading Contender To Become Chelsea's New Head Coach
Friday Morning Sports Update