Volleyball players play during a rehearsal for the start of the volleyball preliminaries at Ariake Arena during the 2020 Summer Olympics, Friday, July 23, 2021, in Tokyo, Japan. (AP Photo/Frank Augstein)

Volleyball players play during a rehearsal for the start of the volleyball preliminaries at Ariake Arena during the 2020 Summer Olympics, Friday, July 23, 2021, in Tokyo, Japan. (AP Photo/Frank Augstein)

A steward uses a plastic glove and a cloth to disinfect the volleyball net during a rehearsal before the start of the volleyball preliminaries at Ariake Arena at the 2020 Summer Olympics, Friday, July 23, 2021, in Tokyo, Japan. (AP Photo/Frank Augstein)

Foluke Akinradewo Gunderson, of the United States, prepares for a women's volleyball training session at the 2020 Summer Olympics, Thursday, July 22, 2021, in Tokyo, Japan. A third trip to the Olympics was far from a sure thing for Gunderson when she gave birth to her first son in November 2019. But Gunderson had set a goal of being both a mother and professional athlete and took advantage of the delayed Olympics to make it back again this year in search of that elusive gold medal. (AP Photo/Frank Augstein)