Alex de Minaur has cast aside sentiment to end Cruz Hewitt’s breakout run and storm into the Washington Open quarter-finals. The top seed and defending champion produced a clinical display to defeat the 17-year-old Hewitt - son of former world No.1 Lleyton - 6-2 6-3 in just 61 minutes. De Minaur shared a warm embrace with Hewitt at the net as Lleyton looked on from the stands at Stadium Court. A Wimbledon boys’ finalist this month, Hewitt has idolised de Minaur while growing up around the David Cup team captained by his father. Australia’s world No.6 charged to the net with authority and displayed great hands en route to improving to 29-14 this season.