He'll now play Ben Shelton next week
Defending champion Jannik Sinner has thrashed home favourite Alex de Minaur at the Australian Open.
The Italian won in straight sets, to ease into semi-finals.
He'll play Ben Shelton next, who had a four-set victory over Italy's Lorenzo Sonego.
Iga Swiatek dropped just three games as she beat Emma Navarro of the USA.
Madison Keys will play the five-time Grand Slam winner in the last-four of the women's singles.
Keys battled past Elina Svitolina in three sets in their quarter-final.

Maguire Makes The Cut As Walsh And Meadow Exit PGA Championship
Cape Verde Reach World Cup Knockout Stage With Lopes Involved
Injury Setbacks Force Ireland Rethink Ahead of Australia Test
Ireland Claim Historic First Win Over India In Cricket
Former Ireland Rugby Women's Coach Philip Doyle Dies Aged 61
France Reach World Cup Knockout Stage With Norway Victory
Clonbullogue's Dunne Secures Front Row Start in Austria
Lowry Moves Up Leaderboard At Travelers Championship