Serbia's head coach Dejan Savic, left, shakes hands with Greece's head coach Theodoros Vlachos after Serbia won the men's water polo gold medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Greece's Dimitrios Skoumpakis (3) shoots against Serbia during the men's water polo gold medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Hungary's head coach Tamas Marcz, left, celebrates with his team after beating Spain in the men's water polo bronze medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Serbia players celebrate after hanging a flag on the goal after defeating Greece in the men's water polo gold medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Spain's goalkeeper Daniel Lopez Pinedo gets a hug after losing to Hungary in the men's water polo bronze medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Players from Serbia hang a flag on the goal after defeating Greece in the men's water polo gold medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Greece's Alexandros Papanastasiou (6) defends against Serbia's Andrija Prlainovic (11) during the men's water polo gold medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Spain's players watch the final moments of their loss to Hungary in the men's water polo bronze medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Hungary's Krisztian Manhercz (3) defends against Spain's Alberto Munarriz Egana (2) during the men's water polo bronze medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)

Serbia players celebrate after defeating Greece in the men's water polo gold medal match at the 2020 Summer Olympics, Sunday, Aug. 8, 2021, in Tokyo, Japan. (AP Photo/Mark Humphrey)