U.S. gymnast Simone Biles won her fourth gold medal of the 2016 Olympic Games in the floor-exercise competition Tuesday.
Biles, who is 19 years old, has given one of the best performances ever by a gymnast in the Olympic Games. On Monday, she took a bronze medal in the balance beam event — a disappointing outcome, given that no woman has ever won five gold medals in a single Olympics.
Four other women have won four golds in a single year's Games.
Biles was the favorite to win the floor exercises; teammate Aly Raisman, seen as Biles' chief competition, took the silver medal.
In track cycling, which wrapped up competition Tuesday, Britain's Jason Kenny took the gold medal in the keirin, his third in the Rio Olympics.
Brazil took the gold medal in men's beach volleyball Tuesday, beating the Netherlands in a tie-breaking third set. The final round of the popular sport filled the stadium with 12,000 dancing, cheering, raucous Brazil fans, which Brazil player Alison Cerutti said added to the pressure to win. Once he and partner Bruno Schmidt had secured their victory, Alison fell face-first into the sand in celebration.
Jamaican runner Usain Bolt began his run for another gold medal in the men's 200-meter sprint Tuesday. He breezed through a preliminary heat and will run in a semifinal Wednesday; the final is Thursday evening.
Bolt kept his unofficial title of the "world's fastest man" Sunday when he edged out American Justin Gatlin in the 100 meters final. Gatlin is on course to face Bolt again in the 200.
Bolt’s teammate, Omar McLeod, became the first Jamaican to ever win an Olympic gold medal in the 110 meter hurdle event. Spain’s Orlando Ortega took silver and Dimitri Bascou took bronze in the race, which was decided by less than two tenths of a second.
In Greco-Roman wrestling, Armenia's Artur Aleksanyan took gold, beating Cuba's Yasmany Lugo Cabrera 3-0. Turkey's Celk Ildem and Iran's Ghasem Rezaei took the bronze medal.
Canada’s Derek Drouin won the men’s high jump final at a height of 2.38 meters, beating out silver winner Mutaz Essa Barshim of Qatar who couldn’t get past the 2.36 meter mark. Bogdan Bondarenko of Ukraine failed twice to pass the 2.38 meter jump before passing and raising the bar to 2.40 to try and win gold. He failed to make the jump and ended up with bronze.
The Chinese women’s table tennis team knocked off Germany to win the gold medal Tuesday night. Team China has won all of the table tennis events in Rio this year with the men’s team final set for Wednesday. Japan won against Singapore earlier in the day to secure the bronze medal.
And Brazilian police said Tuesday they have not been able to find witnesses to the reported robbery at gunpoint of U.S. swimmer Ryan Lochte and several teammates, an incident that took place late Saturday or early Sunday morning after the completion of the Olympic swimming events.
The four U.S. swimmers say they were robbed at gunpoint by men dressed as police as they returned from a party at the French swim team's hospitality house in an upscale Rio neighborhood. Authorities say the police were not called to the scene when the robbery occurred, and only began investigating when reports of the event appeared in local media.
Lochte, who said one of their assailants held a gun to his forehead, has moved out of Olympic housing and employed 24-hour security.
The swimmers said they had been drinking and could not remember details about the taxi they took back to their housing that night.
Also Tuesday, The International Olympic Committee announced it has stripped Russia of a gold medal awarded in the 2008 Olympics in the women's 4x100 sprint relay. The IOC said one of the runners, Yulia Chermoshanskaya, tested positive for two steroids in a reanalysis of her doping samples from the Beijing Olympics. She and the rest of her teammates have been ordered to return their medals.
WATCH: Snapshots from the Rio Olympics