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.

Leinster Face Ulster In This Evenings URC Clash In Belfast
Kildare Senior Football Team vs Laois
Friday Morning Sports Update
Kildare Hurling Team vs Wexford
Leinster Make A Dozen Changes To Their Squad Ahead Of Tomorrows Clash With Ulster
Former Arsenal Goalkeeper, Alex Manninger, Dies In Road Accident
LGFA Approves Twelve New Playing Rule For Championship
Scott Bemand Names Ireland Team For Women's Six Nations Game With Italy