Coco Gauff, just a 19-year-old beat Leolia Jeanjean in US Open first round.

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Also, Coco Gauff had reached the final of the French Open in May.

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Coco Gauff defeated French qualifier Léolia Jeanjean in straight sets in the first round of the US Open.

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Now Gauff will face either Gabriela Ruse or Daria Saville in the next round in New York.

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If she wins, this will be her first grand slam title.

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The 19-year-old knocked out his opponent with a hard hit at the Arthur Ashe Stadium.

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"I'm super excited. This is my first win on Ashe so I think this is the fourth match maybe on this court. Finally, I got a win here,” Gauff said.

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She just lost only two points in the first serve to Leolia Jeanjean.

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