2019 US Open Tennis Tournament- Day Eight. Gael Monfils of France in action against Pablo Andujar of Spain in the Men's Singles round four match on Louis Armstrong Stadium during the 2019 US Open Tennis Tournament at the USTA Billie Jean King National Tennis Center on September 2nd, 2019 in Flushing, Queens, New York City. (Photo by Tim Clayton/Corbis via Getty Images)
