Underwater view shows Japan's Minami Itahashi taking part in the women's 10m platform semifinal during the diving event, August 18, 2016. (Photo by Francois Xavier Marit/AFP Photo)





A team member of Ukraine's synchronized swimming team is thrown into the air during the synchronized swimming team technical routine final in the Maria Lenk Aquatic Center at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, August 18, 2016. (Photo by Wong Maye-E/AP Photo)





Ukraine's team competes during the synchronized swimming technical routine final, August 18, 2016. (Photo by Wong Maye-E/AP Photo)





Alexandra Maloney and Molly Meech of New Zealand jump off their boat after winning the silver medal in the women's 49er FX class medal race, August 18, 2016. (Photo by Nic Bothma/EPA)





(L-R) Bronze medalist Kristi Castlin, gold medalist Brianna Rollins and silver medalist Nia Ali of the United States celebrate with American flags after the Women's 100m Hurdles Final on Day 12 of the Rio 2016 Olympic Games at the Olympic Stadium on August 17, 2016 in Rio de Janeiro, Brazil. (Photo by Cameron Spencer/Getty Images)





Members of the Brazilian sailing team carry the 49er FX women's boat after winning the gold medal at the 2016 Summer Olympics in Rio de Janeiro, Brazil, August 18, 2016. (Photo by Bernat Armangue/AP Photo)





Latvia's Anastasija Grigorjeva, left, and Japan's Risako Kawai compete during the women's wrestling freestyle 63-kg competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil, August 18, 2016. (Photo by Charlie Riedel/AP Photo)





2016 Rio Olympics, Taekwondo, Repechage, Women's -49kg Repechage, Carioca Arena 3, Rio de Janeiro, Brazil on August 17, 2016. Panipak Wongphatthanakit (THA) of Thailand wipes her face before the match. (Photo by Issei Kato/Reuters)





2016 Rio Olympics, Athletics, Final, Women's 200m Final, Olympic Stadium, Rio de Janeiro, Brazil on August 17, 2016. Photographers take pictures of Elaine Thompson (JAM) of Jamaica after she won the gold. (Photo by Gonzalo Fuentes/Reuters)





2016 Rio Olympics, Athletics, Preliminary, Women's High Jump Qualifying Round, Groups, Olympic Stadium, Rio de Janeiro, Brazil on August 18, 2016. Morgan Lake (GBR) of Britain reacts. (Photo by David Gray/Reuters)





2016 Rio Olympics, Athletics, Preliminary, Women's High Jump Qualifying Round, Groups, Olympic Stadium, Rio de Janeiro, Brazil on August 18, 2016. Priscilla Frederick (ANT) of Antigua & Barbuda reacts. (Photo by David Gray/Reuters)





2016 Rio Olympics, Athletics, Preliminary, Women's High Jump Qualifying Round, Groups, Olympic Stadium, Rio de Janeiro, Brazil on August 18, 2016. Blanka Vlasic (CRO) of Croatia competes. (Photo by Dominic Ebenbichler/Reuters)





Sweden's Anna Jenny Fransson, right, competes with Germany's Aline Focken during the women's wrestling freestyle 69-kg competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Wednesday, August 17, 2016. (Photo by Charlie Riedel/AP Photo)





Ayaka Takahashi (R) and Misaki Matsutomo of Japan (L) celebrate their gold medal in the Rio 2016 Olympic Games Women's Badminton Doubles at the Riocentro in Rio de Janeiro, Brazil, 18 August 2016. (Photo by Esteban Biba/EPA)





Canada's Erica Elizabeth Wiebe celebrates with fans after winning the gold medal during the women's 75-kg freestyle wrestling competition, August 18, 2016. (Photo by Markus Schreiber/AP Photo)





Iran's Kimia Alizadeh Zenoorin competes against Spain's Eva Calvo Gomez during their womens taekwondo quarter-final bout in the -57kg category as part of the Rio 2016 Olympic Games, on August 18, 2016, at the Carioca Arena 3, in Rio de Janeiro. (Photo by Kirill Kudryavtsev/AFP Photo)





Liam Phillips of Great Britain (Front-R) and David Graf of Switzerland (Back-R) crash during the men's BMX Cycling quarterfinal competition of the Rio 2016 Olympic Games at the Olympic BMX Centre in Rio de Janeiro, Brazil, 18 August 2016. (Photo by Fazry Ismail/EPA)





Mexico's Paola Espinosa Sanchez takes part in the Women's 10m Platform Semifinal during the diving event at the Rio 2016 Olympic Games at the Maria Lenk Aquatics Stadium in Rio de Janeiro on August 18, 2016. (Photo by Martin Bureau/AFP Photo)





USA's Allyson Felix hands the baton to USA's English Gardner competes in the Women's 4 x 100m Relay Round 1 during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 18, 2016. (Photo by Franck Fife/AFP Photo)





Cyclists, from right, Jefferson Milano of Venezuela, Luis Brethauer of Germany, Kyle Dodd of South Africa and David Graf of Switzerland compete in the BMX cycling quarterfinals during the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, August 18, 2016. (Photo by John Locher/AP Photo)





Players from Argentina celebrate inside the net cage after beating Belgium during a men's field hockey gold medal match at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, August 18, 2016. (Photo by Dario Lopez-Mills/AP Photo)





Brazil's Kahena Kunze, right, and Martine Grael celebrate after winning the 49er FX women's gold medal at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Thursday, August 18, 2016. (Photo by Bernat Armangue/AP Photo)





Helen Maroulis of the United States reacts to defeating Saori Yoshida of Japan during 53kg women's freestyle wrestling title match on Thursday, August 18, 2016. Maroulis defeated Yoshida 4-1 to capture the gold. Yoshida is the world's most decorated wrestler with three Olympic gold medals and 13 world titles. (Photo by Aaron Ontiveroz/The Denver Post)





Spain's Carlos Tobalina competes in the Men's Shot Put Qualifying Round during the athletics event at the Rio 2016 Olympic Games at the Olympic Stadium in Rio de Janeiro on August 18, 2016. (Photo by Franck Fife/AFP Photo)





Britain's Tonia Couch takes part in the Women's 10m Platform Semifinal during the diving event at the Rio 2016 Olympic Games at the Maria Lenk Aquatics Stadium in Rio de Janeiro on August 18, 2016. (Photo by Martin Bureau/AFP Photo)





Mexico's Misael Uziel Rodriguez (red) fights Uzbekistan's Bektemir Melikuziev (blue) during the Men's Middle (75kg) Semifinal 2 match at the Rio 2016 Olympic Games at the Riocentro – Pavilion 6 in Rio de Janeiro on August 18, 2016. (Photo by Yuri Cortez/AFP Photo)





Team China competes in the Teams Technical Routine Final during the synchronised swimming event at the Maria Lenk Aquatics at the Rio 2016 Olympic Games in Rio de Janeiro on August 18, 2016. (Photo by Martin Bureau/AFP Photo)





Serbian team players celebrate their defeat of the US team in women's volleyball, August 18, 2016. (Photo by Ricardo Moraes/Reuters)





Priscilla Frederick of Antigua and Barbuda during a women's high jump qualification round at the 2016 Summer Olympics at the Olympic Stadium in Rio de Janeiro, August 18, 2016. (Photo by Chang W. Lee/The New York Times/Redux)