Canada's Andre De Grasse, left, and Jamaica's Usain Bolt smile at each other during a 200-meter semifinal on Wednesday, August 17. Bolt <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2016%2F08%2F17%2Fsport%2Fusain-bolt-justin-gatlin-200m-rio%2Findex.html" target="_blank">finished first,</a> just in front of De Grasse.
Canada's Andre De Grasse, left, and Jamaica's Usain Bolt smile at each other during a 200-meter semifinal on Wednesday, August 17. Bolt finished first, just in front of De Grasse.
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Jamaica's Elaine Thompson, second from right, edges the Netherlands' Dafne Schippers to win gold in the 200 meters. Thompson also won the 100-meter gold last week.
Jamaica's Elaine Thompson, second from right, edges the Netherlands' Dafne Schippers to win gold in the 200 meters. Thompson also won the 100-meter gold last week.
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U.S. beach volleyball players April Ross, left, and Kerri Walsh Jennings celebrate their bronze-medal win over Brazil's Larissa Franca and Talita Antunes.
U.S. beach volleyball players April Ross, left, and Kerri Walsh Jennings celebrate their bronze-medal win over Brazil's Larissa Franca and Talita Antunes.
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Americans swept the final of the 100-meter hurdles. From left are bronze medalist Kristi Castlin, gold medalist Brianna Rollins and silver medalist Nia Ali.
Americans swept the final of the 100-meter hurdles. From left are bronze medalist Kristi Castlin, gold medalist Brianna Rollins and silver medalist Nia Ali.
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U.S. center DeAndre Jordan grabs a rebound during the quarterfinal game against Argentina. The Americans won 105-78.
U.S. center DeAndre Jordan grabs a rebound during the quarterfinal game against Argentina. The Americans won 105-78.
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Japanese wrestler Kaori Icho, in red, defeated Russia's Valeria Koblova for the gold medal in the 58-kilogram (128-pound) weight class. It was the <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2016%2F08%2F17%2Fsport%2Fkaori-icho-wrestling-rio%2Findex.html" target="_blank">fourth straight Olympic gold medal</a> for Icho, who became the first female in any sport to win an individual-event gold at four Olympics.
Japanese wrestler Kaori Icho, in red, defeated Russia's Valeria Koblova for the gold medal in the 58-kilogram (128-pound) weight class. It was the fourth straight Olympic gold medal for Icho, who became the first female in any sport to win an individual-event gold at four Olympics.
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Another Japanese wrestler, Eri Tosaka, carries her coach on her shoulders after winning gold in her weight class.
Another Japanese wrestler, Eri Tosaka, carries her coach on her shoulders after winning gold in her weight class.
Markus Schreiber/AP
An athlete grips a handball during the quarterfinal round.
An athlete grips a handball during the quarterfinal round.
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Darya Klishina -- <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2016%2F08%2F16%2Fsport%2Fdarya-klishina-russia-rio-2016%2F" target="_blank">the only Russian track-and-field athlete allowed to compete in Rio</a> -- finished ninth in the long jump.
Darya Klishina -- the only Russian track-and-field athlete allowed to compete in Rio -- finished ninth in the long jump.
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Italy's Chiara Tabani, right, reacts during the water polo semifinal against Russia. Italy won 12-9.
Italy's Chiara Tabani, right, reacts during the water polo semifinal against Russia. Italy won 12-9.
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Ariya Jutanugarn of Thailand hits a shot during the first round of the women's golf tournament. She leads by one stroke after a 6-under 65.
Ariya Jutanugarn of Thailand hits a shot during the first round of the women's golf tournament. She leads by one stroke after a 6-under 65.
Alastair Grant/AP
Kenya's Conseslus Kipruto won the 3,000-meter steeplechase. Kenyan men have won every Olympic steeplechase since 1984.
Kenya's Conseslus Kipruto won the 3,000-meter steeplechase. Kenyan men have won every Olympic steeplechase since 1984.
Matt Slocum/AP
Officials spray for mosquitoes at the media village.
Officials spray for mosquitoes at the media village.
Kin Cheung/AP
Water polo players from Australia and Brazil tussle underwater.
Water polo players from Australia and Brazil tussle underwater.
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Jelle van Gorkom, a cyclist from the Netherlands, competes in a men's seeding run at the Olympic BMX Center.
Jelle van Gorkom, a cyclist from the Netherlands, competes in a men's seeding run at the Olympic BMX Center.
Pavel Golovkin/AP
Australia's Daniel Bowker and Jordan Wood paddle during the K-2 200 meters.
Australia's Daniel Bowker and Jordan Wood paddle during the K-2 200 meters.
Luca Bruno/AP
U.S. gymnast Danell Leyva prepares for his performance on the parallel bars during the exhibition gala. Leyva won silver on the apparatus on Tuesday.
U.S. gymnast Danell Leyva prepares for his performance on the parallel bars during the exhibition gala. Leyva won silver on the apparatus on Tuesday.
Dmitri Lovetsky/AP
Brazilian soccer star Neymar goes for goal during a semifinal match against Honduras. He scored within the first 15 seconds, and <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2016%2F08%2F17%2Fsport%2Fbrazil-beats-honduras-to-set-up-rematch-with-germany-in-olympic-final%2Findex.html" target="_blank">Brazil won 6-0.</a>
Brazilian soccer star Neymar goes for goal during a semifinal match against Honduras. He scored within the first 15 seconds, and Brazil won 6-0.
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U.S. athlete Ashton Eaton takes part in the long jump portion of the decathlon. Eaton won the decathlon at the London Games in 2012.
U.S. athlete Ashton Eaton takes part in the long jump portion of the decathlon. Eaton won the decathlon at the London Games in 2012.
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Brazilian freestyle wrestler Joice Silva, in red, competes against Kyrgyzstan's Aisuluu Tynybekova in a 58-kilogram (128-pound) qualification round.
Brazilian freestyle wrestler Joice Silva, in red, competes against Kyrgyzstan's Aisuluu Tynybekova in a 58-kilogram (128-pound) qualification round.
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Antanas Kavaliauskas of Lithuania makes a layup over Australia's Damian Martin during a quarterfinal game. Australia won 90-64.
Antanas Kavaliauskas of Lithuania makes a layup over Australia's Damian Martin during a quarterfinal game. Australia won 90-64.
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American Evan Jager celebrates after winning silver in the 3,000-meter steeplechase.
American Evan Jager celebrates after winning silver in the 3,000-meter steeplechase.
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BMX riders practice prior to the individual seeding event.
BMX riders practice prior to the individual seeding event.
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Lindon Victor of Grenada competes in the decathlon shot put.
Lindon Victor of Grenada competes in the decathlon shot put.
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Ainur Yesbergenova of Kazakhstan, left, and Croatia's Lucija Zaninovic compete in a taekwondo bout.
Ainur Yesbergenova of Kazakhstan, left, and Croatia's Lucija Zaninovic compete in a taekwondo bout.
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The Canadian volleyball team stands during introductions before a quarterfinal match against Russia.
The Canadian volleyball team stands during introductions before a quarterfinal match against Russia.
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Canoe teams take part in a K-2 200-meter semifinal.
Canoe teams take part in a K-2 200-meter semifinal.
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Decathletes run the 100 meters.
Decathletes run the 100 meters.
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