FILE - In this Aug. 9, 2016, file photo, Brazil's Bruno Rezende dives for the ball during a men's preliminary volleyball match against Canada at the Summer Olympics in Rio de Janeiro. Both defending champions in volleyball are in good position to contend for a repeat with Rezende back for a fourth Olympics for the Brazilian men after winning silver in 2008 and ‘12 and gold at home in Rio five years ago. (AP Photo/Jeff Roberson, File)

FILE - In this Aug. 16, 2016, file photo, United States' Foluke Akinradewo prepares to serve during a women's quarterfinal volleyball match against Japan at the Summer Olympics in Rio de Janeiro. Middle Foluke Akinradewo Gunderson is back for a third Olympics after a busy stretch since the games in Rio. Those games had a sour ending for Gunderson, whose knee injury in the first set of the semifinal sidelined her for the rest of the match and contributed to the team's loss to Serbia. Gunderson got married since then and gave birth to her first child in November 2019 but has used the extra year off to get back into form for these games. (AP Photo/Jeff Roberson, File)

FILE - In this Aug. 12, 2016, file photo, China's Zhu Ting, top, spikes the ball over Serbia's Maja Ognjenovic during a women's preliminary volleyball match at the Summer Olympics in Rio de Janeiro. The Chinese women are seeking their fourth gold to match the record held by the Soviets, with 2016 MVP Zhu back again on the squad coached by Lang Ping, who is the first person to win gold in volleyball as both a player (1984) and coach (2016). (AP Photo/Jeff Roberson, File)