NEW YORK, NEW YORK - AUGUST 27: Sloane Stephens of the United States returns a shot during her Women's Singles first round match against women's Anna Kalinskaya of Russia on day two of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)
NEW YORK, NY - AUGUST 30: Angelique Kerber of Germany celebrates a point during her women's singles second round match against Johanna Larsson of Sweden on Day Four of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)
NEW YORK, NY - SEPTEMBER 04: Dominic Thiem of Austria during the men's singles quarter-final match against Rafael Nadal of Spain on Day Nine of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 4, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Pantling/Getty Images)
