The first complete day of competition on August 6 saw three new swimming world records fall as well as plenty of action in other sports, including judo, road cycling, volleyball, basketball, shooting, and archery.
Rio Olympics, Day 1
The Rio Olympics are now in full swing after the Summer Games were declared officially open on August 5 in Brazil.
1
Katinka Hosszu of Hungary competes on her way to winning gold in the women's 400-meter individual medley.
2
Katinka Hosszu celebrates shattering the world record in the women's 400-meter individual medley. Her winning time of 4 minutes, 26.36 seconds knocked two seconds off the previous record.
3
Great Britain's Adam Peaty (center) set a new world record in the men's 100-meter breaststroke heats.
4
Samba dancers pose at the Olympic Aquatics Stadium in Rio.