US Open's first Grand Slam semifinal.

Garcia assumed control and never really let Gauff or the audience to fully participate.

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With a 6-3, 6-4 victory at Arthur Ashe Stadium, Garcia advanced to her first Grand Slam semifinal of her career.

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Gauff did at the age of 18—and this is the one enormous difference.

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Garcia assumed control and never really let Gauff or the audience to fully participate

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I was contacting the ball with a pretty smooth motion.

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