\n<\/p>\n
De Minaur needed just one hour and 33 minutes to reach the quarter-finals, although the Australian eighth seed was far from flawless against the world number 435.<\/p>\n
Breaks apiece early in the first set suggested the crowd on Louis Armstrong Stadium were about to enjoy a close contest, but Riedi’s all-or-nothing aggressive game proved his downfall.<\/p>\n
The 23-year-old faced seven break points in the first set alone, allowing De Minaur to sweep up in 32 minutes.<\/p>\n
De Minaur set out his stall for the second set by breaking from 0-40 down and winning five straight games before Riedi enjoyed a brief resurgence.<\/p>\n
The Australian made just 55% of his first serves in the second set, but felt little pressure as Riedi made 15 unforced errors.<\/p>\n
Riedi did remarkably well to reach the last 16 after two separate operations at the end of last year, but a leg issue began to hamper him in the final set and his service game fell apart.<\/p>\n
De Minaur picked up his level from the second set to reach a Grand Slam quarter-final for the sixth time in his career.<\/p>\n<\/div>\n