ZUMA Press - Image Search: Tennis 2021: Erste Bank Vienna Open

Jannik Sinner in action during a men's singles match at the 2023 US Open, Saturday, Sep. 2, 2023 in Flushing, NY. (Manuela Davies/USTA via AP Stock Photo - Alamy

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Jannik Sinner in action during practice at the 2023 US Open, Thursday, Aug. 24, 2023 in Flushing, NY. (Pete Staples/USTA via AP Stock Photo - Alamy

ZUMA Press - Image Search: Tennis 2021: Erste Bank Vienna Open

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ZUMA Press - Image Search: Tennis 2021: Erste Bank Vienna Open

Frances Tiafoe of the United States returns the ball to Jannik Sinner of Italy during their semi final match at the Erste Bank Open ATP tennis tournament in Vienna, Austria, Saturday, Oct.

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Frances Tiafoe of the United States returns the ball to Jannik Sinner of Italy during their semi final match at the Erste Bank Open ATP tennis tournament in Vienna, Austria, Saturday, Oct.

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Jannik Sinner in action during a men's singles match at the 2023 US Open, Thursday, Aug. 31, 2023 in Flushing, NY. (Brad Penner/USTA via AP Stock Photo - Alamy