Karolina Pliskova of the Czech Republic and Anhelina Kalinina of Ukraine play their first round match at a mostly empty Arthur Ashe Stadium on Monday. This year’s U.S. Open is taking place without spectators because of the coronavirus pandemic.

Karolina Pliskova of the Czech Republic and Anhelina Kalinina of Ukraine play their first round match at a mostly empty Arthur Ashe Stadium on Monday. This year's U.S. Open is taking place without spectators because of the coronavirus pandemic.

Karolina Pliskova of the Czech Republic and Anhelina Kalinina of Ukraine play their first round match at a mostly empty Arthur Ashe Stadium on Monday. This year’s U.S. Open is taking place without spectators because of the coronavirus pandemic.

NEW YORK, NEW YORK – AUGUST 31: A general view of Arthur Ashe Stadium is seen as Karolina Pliskova of the Czech Republic and Anhelina Kalinina of the Ukraine play during their Women’s Singles first round match on Day One of the 2020 US Open at the USTA Billie Jean King National Tennis Center on August 31, 2020 in the Queens borough of New York City. (Photo by Al Bello/Getty Images)