Williams takes 10 of last 12 games, tops Stephens at US Open

Three-year-old Alexis Olympia Ohanian Jr., center, daughter of Serena Williams, of the United States, is handed down to courtside after watching her mother play against Sloane Stephens, of the United States, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Seth Wenig)

Daniil Medvedev, of Russia, returns a shot to J.J. Wolf, of the United States, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Seth Wenig)

Maria Sakkari, de Grecia, celebra un punto en un partido contra la estadounidense Amanda Anisimova en la tercera ronda del US Open el sábado, 5 de septiembre del 2020. (AP Foto/Seth Wenig)

Serena Williams, of the United States, answers questions during an interview after defeating Sloane Stephens, of the United States, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Seth Wenig)

Serena Williams, of the United States, reacts during a match against Sloane Stephens, of the United States, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Seth Wenig)

Sloane Stephens, of the United States, wipes sweat from her brow before serving to Serena Williams, of the United States, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Seth Wenig)

Serena Williams, of the United States, reacts after defeating Sloane Stephens, of the United States, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Seth Wenig)

Vasek Pospisil, of Canada, reacts during a match against Milos Raonic, of Canada, during the second round of the US Open tennis championships, Thursday, Sept. 3, 2020, in New York. (AP Photo/Seth Wenig)

Dominic Thiem, of Austria, serves to Marin Cilic, of Croatia, during the third round of the US Open tennis championships, Saturday, Sept. 5, 2020, in New York. (AP Photo/Frank Franklin II)