Defending champion Naomi Osaka has been knocked out of the US Open, losing 7‑5 6‑4 to Switzerland's Belinda Bencic in the last 16.
Japan's Osaka will lose her world number one ranking, with Ashleigh Barty of Australia to return to the top spot.
Bencic, will play Donna Vekic in the quarter‑finals.
Source: BBC
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