Home Serena Williams returns the ball during the 2018 U.S. Open Women’s Single’s finals at Arthur Ashe Stadium in Flushing Meadows, NY on Saturday, Sept. 8, 2018.<br>(Photo by Chris Trotman/Getty Image) Serena Williams returns the ball during the 2018 U.S. Open Women's Single's finals at Arthur Ashe Stadium in Flushing Meadows, NY on Saturday, Sept. 8, 2018.<br>(Photo by Chris Trotman/Getty Image)

Serena Williams returns the ball during the 2018 U.S. Open Women’s Single’s finals at Arthur Ashe Stadium in Flushing Meadows, NY on Saturday, Sept. 8, 2018.
(Photo by Chris Trotman/Getty Image)

Serena Williams argues with the chair umpire during the 2018 U.S. Open Women’s Single’s finals at Arthur Ashe Stadium in Flushing Meadows, NY on Saturday, Sept. 8, 2018.<br>(Photo by Chris Trotman/Getty Image)

Naomi Osaka raises the championship trophy after winning the 2018 U.S. Open Women’s Single’s finals at Arthur Ashe Stadium in Flushing Meadows, NY on Saturday, Sept. 8, 2018.<br>(Photo by Chris Trotman/Getty Image)