NEW YORK, NEW YORK - SEPTEMBER 06: Jannik Sinner of Italy serves against Alexander Zverev of Germany during his Men’s Singles round of 16 match on Day Eight of the 2021 US Open at USTA Billie Jean King National Tennis Center on September 06, 2021 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)
