De Minaur, Alcaraz and Djokovic stroll into US Open quarters as Sabalenka, Vondrousova sail

Australian eighth seed Alex de Minaur powered into the quarterfinals of the US Open on Monday with a straight-sets rout of Swiss qualifier Leandro Riedi.

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De Minaur, who also reached the US Open quarterfinals last year, cruised to victory 6-3, 6-2, 6-1 in one hour 33 minutes.

Riedi, whose world ranking has plummeted to 435th after undergoing two knee surgeries in the past 12 months, was never in contention against the skilful De Minaur.

The 26-year-old Aussie broke Riedi eight times and took advantage of 39 unforced errors by his opponent to wrap up a clinical win.

Carlos Alcaraz and Novak Djokovic also motored into the quarterfinals on Sunday as reigning women's champion Aryna Sabalenka kept her title defence firmly on track.

Sabalenka faces a quarterfinal against the Czech Republic's Marketa Vondrousova, the 2023 Wimbledon champion, who upset ninth seed Elena Rybakina 6-4, 5-7, 6-2 in the late game on Arthur Ashe.

Spanish second seed Alcaraz and tennis icon Djokovic -- who are on course to meet in the semifinals -- both recorded straight-sets wins on the Arthur Ashe Stadium main court.