Alex De Minaur, the top seed and defending champion in Washington, defeated Stefanos Tsitsipas in a highly anticipated match at the ATP 500 event.
De Minaur's next opponent will be fellow Australian Cruz Hewitt, in a generational derby that pits the tournament's top seed against the 17-year-old son of a legend, who is coming off his first career ATP main-draw win.
A match rich in symbolism for Australian tennis, bringing two generations face to face.
