‘Keep fighting!’ Serena Williams yells herself to a U.S. Open win

Serena Williams, of the United States, reacts after defeating Maria Sakkari, of Greece, during the quarterfinals of the US Open tennis championships, Monday, Sept. 7, 2020, in New York. (AP Photo/Seth Wenig)

NEW YORK — Her breathing loud enough to hear in an empty Arthur Ashe Stadium, her third-set deficit a point from growing to 3-1 against someone who beat her less than two weeks earlier, Serena Williams scrambled to extend a 13-stroke exchange until her opponent netted a forehand.