7:40 p.m.
Max Whitlock of Great Britain won the gold medal in men's floor exercise Sunday.
Whitlock posted a score of 15.633, the first-ever Olympic gold medal for the British in men's gymnastics. Brazil's Diego Hypolito earned silver while teammate Arthur Mariano earned bronze.
Reigning world floor exercise champion Kenzo Shirai of Japan was fourth and two-time Olympic all-around champion Kohei Uchimura was fifth.
American Jake Dalton finished sixth and teammate Sam Mikulak — who posted the highest score during qualifying — was eighth.
7:10 p.m.
The U.S. Olympic Committee says Ryan Lochte and three other American swimmers were robbed by armed men who stopped their taxi in Rio.
USOC spokesman Patrick Sandusky says Lochte and the others left the French Olympic team's hospitality house early Sunday in a taxi headed for the athletes village.
He says "the taxi was stopped by individuals posing as armed police officers who demanded the athletes' money and other personal belongings."
Sandusky says the four swimmers are "safe and cooperating with authorities."
7:10 p.m.
Italy's Niccolo Campriani has become the first shooter to win two gold medals at the Rio de Janeiro Games, passing Russia's Sergey Kamensky on his final shot to repeat as Olympic champion in men's 3-position rifle.
Campriani led after the kneeling and prone series, but Kamensky overtook him in the standing portion before eliminations started.
Campriani trailed by 0.6 points heading into his final shot and shook his head with a smile after hitting 9.2. But Kamensky could only muster 8.3 on his final shot, sending a roar across the crowd and Campriani to the top step of the podium for the second time after winning air rifle last Monday.
France's Alexis Raynaud captured bronze his first Olympics.
American Matt Emmons, who earned bronze at the 2012 London Games, did not qualify for the final. He finished 19th after struggling in the standing portion of qualifying.
6:45 p.m.
Lucie Hradecka and Radek Stepanek have won the bronze medal in Olympic tennis mixed doubles.
The Czechs beat fourth-seeded Sania Mirza and Rohan Bopanna of India 6-1, 7-5 on Sunday.
On Friday, Hradecka was one point from clinching a medal in women's doubles when partner Andrea Hlavackova was struck in the face by a volley, and they went on to lose that semifinal and the bronze medal match.
The mixed doubles bronze is the second Olympic medal for Hradecka, who won silver with Hlavackova in 2012. It's the first for the 37-year-old Stepanek, a two-time major champion in men's doubles.
Czech Republic won three bronzes in Olympic tennis this year, with Petra Kvitova in women's singles and Lucie Safarova and Barbora Strycova in women's doubles also making the podium.
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6:45 p.m.
Russia leads after the duet free preliminary in synchronized swimming, where athletes are competing in water that is blue again.
Natalia Ishchenko and Svetlana Romashina totaled 98.066 points on the first day of competition Sunday.
Close behind in second was China's Huang Xuechen and Sun Wenyan at 96.066.
Japan's Yukiko Inui and Risako Mitsui were third at 94.400.
The swimmers are competing in the pool that was used for water polo before that sport resumed its competition at the Olympic Aquatic Stadium as previously planned. The water appears slightly cloudy, but the swimmers are visible underwater, which is vital since they need to be able to see each other as do the judges.
Olympic officials worked through the night draining green-tinged water out of the water polo pool at Maria Lenk Aquatics Center, and pumping in nearly 1 million gallons of clean water for synchronized swimming.
6:35 p.m.
Only two of the Estonian triplets running in the women's Olympic marathon completed the Rio de Janeiro race.
Lily Luik was the fastest of the 30-year-old sisters, clocking 2 hours, 48 minutes, 29 seconds to finish in 97th place Sunday. Luik says the race was hard on a hot and sunny morning and that "everybody suffered."
Leila Luik crossed the finish line in 114th in 2 hours, 54 minutes, 38 seconds.
But Liina Luik didn't finish, withdrawing before the 35-kilomter mark.
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6 p.m.
Olympic organizers say security forces have detonated what they called a suspicious package outside theRio Olympics sailing venue at Marina da Gloria.
No further details were immediately available early Sunday afternoon.
A loud bang could be heard from the marina.
The avenue outside the marina was part of the course for the women's marathon earlier Sunday.
5:15 p.m.
Jelagat Sumgong became the first Kenyan to win the women's Olympics marathon on Sunday, delivering her country's first gold of the Rio de Janeiro Games.
Sumgong completed the course in 2 hours, 24 minutes, 4 seconds ahead of Kenyan-born Eunice Kirwa, who now runs for Bahrain. World champion Mare Dibaba of Ethiopia took bronze.
Unlike the annual Rio marathon, the Olympic route didn't go near the eye-catching beaches of Copacabana and Ipanema. It started and finished in hot and sunny conditions at the Sambodromo parade area.
3:50 p.m.
Darya Klishina, the only Russian athlete in Olympic track and field, has arrived for a hearing to determine whether she can compete.
Klishina's lawyer Paul Greene tells The Associated Press that the Russian long jumper "plans to say the truth, which is that she's a clean athlete" when she testifies before the Court of Arbitration for Sport after track's world governing body, the IAAF, withdrew her eligibility for the Olympics.
Greene says the IAAF case against Klishina relies on confidential evidence and "we haven't had the chance to look at it, to view it, have a science person analyze, nothing, and we believe for that reason we should prevail because I don't think legally that can be upheld."
If she wins, Klishina will compete in long jump qualifying Tuesday.
3:35 p.m.
The first match of the Olympic wrestling tournament produced one of the biggest upsets the Rio Games will likely see.
Unheralded Japanese wrestler Shinobu Ota stunned seven-time world champion Hamid Soryan of Iran 5-4 in the opening set of Greco-Roman bouts in Arena Carioca 2.
The loss was the second straight international flame-out for Soryan, who has won six world titles in addition to gold at the London Games in 2012.
At last year's world championships in Las Vegas, Soryan was flagged for excessive brutality and ruled ineligible for a medal.
Iran is still expected to factor heavily in the medal chase in Rio. But Soryan's first match wasn't exactly how the wrestling-mad nation wanted to start the week.
2:50 p.m.
Goodbye, green. Hello again, blue. Hope you can stick around awhile.
Synchronized swimmers were greeted by clear blue water in the competition pool Sunday after officials worked through the night to replace murky green water that's become a big embarrassment for RioGames organizers.
Replacing the water in time for the early-morning training and competition at 11 a.m. local time was a significant challenge - the pool holds nearly 1 million gallons.
But divers were training as expected Sunday morning.
Organizers have insisted there are no health risks posed by the discolored water seen in the pool during and earlier water polo competition and in a different diving pool. Still, visibility underwater is a major issue in synchronized swimming, where competitors spend lots of time underwater and need to be able to see their teammates.
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12:40 p.m.
The world's fastest man will be crowned Sunday night as Olympic athletes in Rio de Janeiro compete for 22 gold medals in 12 sports.
Usain Bolt - a simply unmissable figure to watch - is seeking an unprecedented third straight gold in the 100 meters. He must beat American Justin Gatlin, who posted the fastest time in the heats.
The 400 meter final features a showdown between LaShawn Merritt of the United States, Kirani James of Grenada and Wayde van Niekerk of South Africa.
Britain's Andy Murray, trying to become the first player to win two Olympic singles golds, faces Juan Martin del Potro of Argentina. Venus Williams can become the first tennis player with five Olympic golds if she and Rajeev Ram win the mixed doubles.
On the golf course, Britain's Justin Rose holds a one-shot lead over Sweden's Henrik Stenson going into the final round. It'll be first Olympic medal in golf since 1904.
Olympic all-around champion Simone Biles goes for her third gold in Rio when she competes in the women's vault.