Coco Gauff, seen here at the 2020 Australian Open at Melbourne Park on January 26, 2020 in Melbourne, Australia, exits the US Open as organizers use 'enhanced protocol plan' after positive Covid test./Credit:	Kelly Defina/Getty Images AsiaPac/Getty Images

Coco Gauff, seen here at the 2020 Australian Open at Melbourne Park on January 26, 2020 in Melbourne, Australia, exits the US Open as organizers use 'enhanced protocol plan' after positive Covid test./Credit: Kelly Defina/Getty Images AsiaPac/Getty Images

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Coco Gauff exits US Open as organizers use 'enhanced protocol plan' after positive Covid test

Coco Gauff lost her opening match at a different looking US Open against former semifinalist Anastasija Sevastova, while two fellow pros who came into contact with a player who tested positive for the coronavirus were allowed to compete on the opening day.