Gauff was one of the main stories of Wimbledon where she reached the last 16 and took out former champion Venus Williams along the way.
The 15-year-old - who saw her popularity soar at the All England Lawn Tennis Club - returned to court for the first time since her excellent showing at SW19.

Coco Gauff qualified for the Citi Open

Image credit: Eurosport

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And she sealed her place in the Citi Open after crushing Japanese opponent Hiroko Kuwata 6-1 6-2 in 64 minutes.
The American will be hoping more people sit up and take notice in one of the key warm-up tournaments before the US Open.
It represents just her third main draw appearance after previously featuring at Wimbledon and the Miami Open.
After qualifying for the Citi Open, Gauff said: “I was glad that I was able to get a feel of how it is, the site, playing those two qualifying matches.
"The weather is similar to home, so I felt like I've been practicing at home. I'll be happy playing on any court.”
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