1:05 a.m.

An officiating controversy threatened to spoil the party atmosphere at the beach volleyball venue late on the first day of competition.

China and Switzerland split two very close sets and the Chinese team of Wang Fan and Yue Yuan led 14-11 in the deciding set when they called for a review on a net fault and appeared to win the challenge. The two Chinese women began waving to the crowd and took the microphone to give the customary thanks, but the Swiss continued to argue with the referee.

After several minutes, the officials called everyone back to the court and resumed play.

Switzerland won the next point to stay alive but lost the decisive set 15-12.

Afterward, Switzerland's Isabelle Forrer explained that a player who wants a net fault called is supposed to stop playing at the point of the violation. Since the Chinese player continued, she lost the right to challenge the call.

12:40 p.m.

Brazilian star Marta scored twice and Brazil thrilled the host-country crowd with a decisive 5-1 victory over Sweden in a group-stage match in Rio de Janeiro on Saturday night.

Beatriz scored twice for the Brazilians. Cristiane scored her 14th all-time Olympic goal, best in the history of the women's tournament.

Lotta Schelin scored in the 89th minute for Sweden.

Marta is a five-time FIFA World Player of the Year but she does not have major national team championship. The Brazilians have come close in the Olympics twice, falling to the United States in the final match in Athens and Beijing.

11:45 p.m.

Carmelo Anthony says his US men's basketball teammates need to accept responsibility and move on after reports that three players visited a legal brothel in Rio de Janeiro.

"What's done is done. We have time off and guys did what they did. We accept those responsibilities and move on," said Anthony, a four-time Olympian and the elder statesmen of the team. The Americans dominated China 119-62.

Anthony was responding to questions about a TMZ report that several players thought they were walking into a spa on their day off Wednesday night, but wound up in a brothel.

Coach Mike Krzyzewski did not address the situation during his postgame news conference.

9:40 p.m.

It's party time at the Olympic pool.

Samba dancers in feathers and sequins are tearing it up on deck accompanied by drummers ahead of the first late-night finals session of the Rio Games on Saturday.

Several swimmers and coaches are capturing the entertainment on their cell phones while swimmers warm up in the pool.

Rowdy music from the Rolling Stones and AC/DC has been blasting too, ensuring everyone is awake for the first final that begins at 10 p.m.

9:30 p.m.

Sopita Tanasan of Thailand won gold in her Olympic debut with an easy victory in the women's 48-kilogram category Saturday in the first weightlifting event at the Rio Games.

Tanasan snatched 92 kilograms and lifted 108 kilograms in the clean and jerk for a total of 200 kilograms. It was her first time competing on the world level at that weight class.

On her first lift in clean and jerk, Tanasan easily succeeded at 106 kilos to take the lead. She lifted 108 kilos on her second attempt, but failed at 110 kilos on her final try.

In a last-ditch bid to snatch the gold, Sri Wahuni Agustiani of Indonesia twice tried to lift 115 kilos to overtake Tanasan. She failed on the first try and Tanasan celebrated by hugging her coaches in the green room.

Agustiani was able to lift the bar on her second attempt and her coaches screamed in celebration, but she couldn't jerk the weight.

Agustiani won silver and Hiromi Miyake took bronze.

9:20 p.m.

Katie Ledecky will be anchoring the United States in the women's 4x100-meter freestyle relay.

Ledecky already swam in the afternoon preliminaries Saturday, leading the Americans to the second-fastest time behind the favored Australians.

She's the only holdover from the morning team. The U.S. rested its top two 100 free swimmers, Abbey Weitzeil and Simone Manuel, and they're also adding Dana Vollmer, who'll be doing double duty in the late-night session. She's also competing in the semifinals of the 100 butterfly, but we'll have more than an hour to rest up between races.

Manuel leads off for the Americans, followed by Weitzeil, Vollmer and Ledecky. They'll be trying to give the U.S. its first gold medal in the event since the 1996 Atlanta Games.

Defending Olympic champion Australia is a big favorite. Emma McKeon and Brittany Elmsie will take the top two legs, followed by sisters Bronte and Cate Campbell.

9:20 p.m.

Saskia Bartusiak scored in the 88th minute to pull Germany into a 2-all draw with Australia in a women's soccer group-stage match at Corinthian Stadium in Sao Paulo on Saturday.

Sam Kerr scored for Australia in the sixth minute and Caitlin Ford added another in the 45th, but Germany closed the gap in first-half stoppage time with Sara Daebritz's goal.

Australia is ranked No. 5 in the world. Known as the Matildas, they had a breakthrough last summer when they became the first Austrailain team — male or female — to win a World Cup knockout round match.

Germany, ranked No. 2 in the world, defeated Zimbabwe 6-1 in the Olympic tournament opener. Australia fell to Canada 2-0 to open the group stage.

8:35 p.m.

Rio's downtown cauldron has become selfie central. A day after it was lit to formally open the games, thousands of Rio's residents have been taking turns snapping images of themselves in front of the Olympic flame.

Residents such as Thiago Rodrigues say that even some once opposed to hosting the games are now happy they are taking place in their city.

The flame was moved to its new location on Olympic Boulevard at the end of the opening ceremony Friday night in Maracana stadium. The newly-renovated precinct on Guanabara Bay features big screens and live entertainment during the games.

It is also home to architect Santiago Calatrava's iconic Museu do Amanha, or Museum of Tomorrow. Its soaring silhouette provided the perfect backdrop for more sunset selfies.

7:45 p.m.

The leading contenders for the first Olympic gold medal in women's rugby qualified for the quarterfinals with two wins each Saturday, with world series champion Australia, New Zealand and Canada posting lopsided wins.

New Zealanders Portia Woodman and Kayla McAlister had a share of the lead in the try-scoring stakes with four each, along with Australia's Charlotte Caslick and Bianca Farella of Canada. Rugby is returning to the Olympics for the first time in 92 years — the sevens format and the women's competition are on debut at the Summer Games.

Second-seeded New Zealand topped Pool B with wins over Kenya and Spain, and France was unbeaten behind them to also qualify for the finals.

Canada had convincing wins over Japan and Brazil and will progress along with Britain, which was also unbeaten.

The Australians were atop Pool A with wins over Colombia and Fiji, which earlier edged the United States 12-7. The Americans recovered from that to beat Colombia 48-0 to improve their chances of advancing.

7:30 p.m.

Russia's first champion at the Rio Olympics suggests his win will help to lift the gloom from the country's doping scandal.

Beslan Mudranov, who won gold in the men's 60-kilogram judo class, is "really pleased I could get a gold on the first day, because everyone knows what kind of situation we had in Russia before the Olympics."

Russia's team at the Olympics has lost over 100 athletes to various measures related to its doping scandals, including large-scale bans on its track and field, weightlifting and rowing teams.

Mudranov says that, besides him, "many (Russian) athletes who could also have won gold, many of them weren't let in." Still he adds, his win is "not our last gold" in Rio.

6:50 p.m.

The United States has claimed one of the biggest wins in its Olympic women's field hockey history, defeating world No. 2 Argentina 2-1 in its opening match.

Argentina's Agustina Albertarrio appeared to break a scoreless tie two minutes into the third period on Saturday, but the goal was nullified. Three minutes later, USA's Katie Reinprecht slipped one under the goalkeeper to give the Americans a 1-0 lead.

Michelle Kasold scored for the USA on a penalty corner with 10:26 to play. Delfina Merino scored for Argentina with 3:27 remaining, but he Americans held on.

The Americans haven't medaled since 1984, when they claimed bronze in Los Angeles. The United States gained momentum this summer by placing third in the Champions Trophy event in June, and its No. 5 world ranking is its highest slot ever.

6:30 p.m.

Brazilian military and police "have absolute confidence" that the bullet which flew through the roof of a media tent at the Olympic Equestrian Center was simply "an unfortunate incident."

There was a scare during the lunch break at the dressage event Saturday as a military-looking bullet pierced the roof of the tent and landed on the floor. The competition was not disrupted and nobody was hurt.

Rio 2016 communications head Mario Andrada says authorities are investigating the incident and "they can clearly determine this area was not the target, it was a stray bullet."

Andrada adds "they can confirm it has nothing to do with the games but they cannot be more precise at the moment."

The security around the Deodoro competition venue has been reinforced.