The top four teams as determined by yesterday's ranking round - South Korea, the United States, Italy and Australia - received a bye into this afternoon's quarterfinals.
Australia, the four-seed will shoot against France, who beat Malaysia in impressive fashion this morning.
After falling behind in the first set, the French came back to win the next three, even shooting three 10's with their three final arrows, winning the set 57-43.
The second match of the morning was between the Netherlands, led by Sjef van den Berg and Rick van der Ven, and Spain, who qualified eighth in the ranking round.
The Netherlands swept the Spanish, winning all three sets. A stray five, shot by Mitch Dielemans, seemed to put the sweep in danger, but ven den Berg shot a 10 with his final arrow, tying the set and giving the Dutch the victory, 5-1.
They will compete with South Korea in the quarterfinals.
Host nation Brazil, led by 18-year-old Marcus D'Almeida, then took on the People's Republic of China for a spot against Italy in the quarters. After falling behind two sets to none, Brazil came up big in the third, shooting a 56 out of a possible 60.
It wasn't enough, though, and China came back in the fourth set to win the match, setting up a meeting with Italy this afternoon.
The final match of the morning session was Indonesia, the tenth seed, and Chinese Taipei, bronze medalists in the World Championships, with the winner meeting the second seed - the United States - later today.
Indonesia won the first set to take a 2-0 lead. A tie in the second and in the third, due to a change of score from a nine to a 10 for one of Indonesia's arrows, made it 4-2 in Indonesia's favor, putting Chinese Taipei in a must-win situation in the fourth.
Taipei was unable to come back and Indonesia manged the first major upset in archery in the 2016 Rio Olympic Games.
Archery resumes this afternoon at 1PM ET for the quarterfinals, semifinals, and medal matches.