Group A: Brazil (3), Russia (4), Japan (5), South Korea (9), Argentina (12) and Cameroon (2 1).
Group b: USA (1), China (2), Serbia (6), Italy (8), Netherlands (14) and Puerto Rico (16).
According to the Olympic competition system, the two teams lead in a single round, and the top four teams advance to the quarterfinals. In the subsequent 1/4 finals, the first place in Group A was against the fourth place in Group B, and the first place in Group B was against the fourth place in Group A, and the second place in Group A and the third place in Group B were decided by drawing lots to play in the 1/4 finals. The fifth place of the two teams in Rio Olympic Games tied for ninth place, and the sixth place of the two teams in Rio Olympic Games tied for 1 1.