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.
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Nozomi Sato of Japan (right) celebrates winning a preliminary tie in the women's epee.
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Serbia's Stefan Bircevic scores a slam dunk against Venezuela during an early round of the men's basketball competition.
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Japanese gymnast Kohei Uchimura loses his grip as he competes on the horizontal bar.
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Azerbaijani gymnast Oleg Stepko competes during qualification on the horizontal bar.