35-year-old Anthony Ervin grabs gold in 50m freestyle.
MEDAL ALERT-WORLD RECORD: Katie Ledecky of the United States has set a world record to win the 800-meter freestyle, her four gold medal at the Rio Olympics. Jazz Carlin of Britain gets silver, while Boglarka Kapas of Hungary claims bronze.
UPSET ALERT: Michael Phelps has been beaten in the 100-meter butterfly at the Rio Olympics. Joseph Schooling of Singapore takes the gold, while Phelps ties for the silver with Laszlo Cseh of Hungary and Chad le Clos of South Africa.
MEDAL ALERT: Maya DiRado of the United States has won gold in the women's 200-meter backstroke at the Rio Olympics. Hungary's Katinka Hosszu takes the silver, while Canada's Hilary Caldwell claims bronze.
MEDAL ALERT: Rafael Nadal and Marc Lopez of Spain won the first tennis gold medal of the Rio Olympics tennis competition, beating Florin Mergea and Horia Tecau of Romania 6-2, 3-6, 6-4 in the men's doubles final.
Nadal and Lopez won the last three games Friday night after trailing 4-3 in the third set.
It's the second Olympic gold of Nadal's career. He was the singles champion at Beijing in 2008. It's the first medal for Lopez.
Steve Johnson and Jack Sock won the bronze for the United States.
Venus Williams is one victory away from her record-tying fifth Olympic tennis medal — and she got there by beating the woman who halted her sister's bid for a calendar-year Grand Slam.
The 36-year-old American and Rajeev Ram reached the Rio Games mixed doubles semifinals with a 6-3, 7-5 victory Friday against Roberta Vinci and Fabio Fognini of Italy.
It was Vinci who pulled off one of the biggest upsets in tennis history by defeating Serena Williams in the 2015 U.S. Open semifinals.
Venus Williams owns one singles gold and three doubles golds.
Kathleen McKane won five Olympic tennis medals — one gold — in the 1920s.
Williams and Ram face Sania Mirza and Rohan Bopanna of India on Saturday for a berth in the mixed doubles final.
Kyrie Irving scored 15 points and the U.S. men's basketball team survived its second straight strong challenge in the Rio Games, edging Serbia 94-91.
The Americans won their 48th consecutive international tournament game, but it was anything but easy.
Serbia's Bogdan Bogdanovic missed a 3-pointer from the left wing with 2 seconds left that would have tied it, and Kevin Durant grabbed the rebound to keep the Americans unbeaten. They barely escaped against Australia on Wednesday.
Seeking their third straight gold medal, the Americans built an early 18-point lead on Friday but couldn't put away the Serbians, who lost by 29 to the U.S. in the 2014 Basketball World Cup final.
DeAndre Jordan scored 13 and Carmelo Anthony 12 for the U.S., which will close pool play on Sunday against France.
Nikola Jokic scored 25 and Miroslav Raduljica 18 before fouling out for Serbia.
Sophie Schmidt scored in the 56th minute and Canada advanced to the women's soccer semifinals at the Rio Games with a 1-0 upset France on Friday night.
The tenth-ranked Canadians, who won the bronze medal at the London Olympics, had not dropped a match in Brazil but faced a tough quarterfinal against No. 3 France.
Canada will play Germany on Tuesday in Belo Horizonte.
Canada also defeated France in the bronze medal match in London.
The Netherlands has one team through to the quarterfinals in the men's bracket at the Copacabana beach volleyball venue.
Reinder Nummerdor and Christiaan Varenhorst beat Mexico 21-18, 21-15 in the opening round of the knockout stage on Friday. Nummerdor is at his third Olympics, and he's never finished worse than fifth.
The other Dutch men's team will play on Saturday. If it beats Canada, there will be an all-Dutch matchup for a spot in the semifinals.
Italy is already going head-to-head later on Friday with the two men's teams meeting in the round of 16.
Nummerdor said: "It's not nice in the Olympics that you compete with your own country."
MEDAL ALERT-WORLD RECORD: Iran opened its account in Rio with a gold medal and a world record as Kianoush Rostami outmuscled his rivals to win the men's 85-kilogram weightlifting class.
Rostami knelt and kissed the platform before adopting a position of prayer after his lift of 217 kilograms in the clean and jerk, which when added to his 179 from the snatch gave him a winning total of 396 — one kilo above the world record he had set in May.
The silver went to China's Tian Tao on 395. Tian had a high-risk strategy of attempting 217 on his last lift after twice failing at 210, thus risking finishing last if he didn't make the lift.
Bronze went to Romania's Gabriel Sincraian on 390. Sincraian only returned last year from a two-year ban for doping.
Tirunesh Dibaba already clinched a track and field bronze in the 10,000 meters early Friday. Now it is time for younger sister Genzebe to step forward in the 1,500.
World champion Genzebe easily qualified for the semifinals of the 1,500 late Friday, distancing opposition with a kick a lap from home and coasting from then on.
But she was so relaxed that she swerved closely to the inside rail and had to take a corrective step to get back in line. It was her only problem toward a time of 4 minutes 10.61 seconds, more than 20 seconds off her world record.
The semifinal is Sunday and the final on Tuesday.
MEDAL ALERT: Russia won the men's team foil event Friday for its sixth fencing medal of the Rio Games.
Russia rallied from five points down to beat France 45-41, capturing its third gold medal in fencing so far. Hungary and the United States are second in the sport's medal count with three.
The Russians were trailing 35-30 when Artur Akhmatkhuzin scored 10 quick points to help clinch the bout.
Steve Johnson and Jack Sock have won the men's doubles bronze for the United States, the first medal of the Rio Olympics tennis competition.
Johnson and Sock beat the Canadian pair of Daniel Nestor and Vasek Pospisil 6-2, 6-4 on Friday night.
Sock and Pospisil won the Wimbledon doubles championship together in 2014.
Rafael Nadal and Marc Lopez of Spain are facing Florin Mergea and Horia Tecau of Romania in the gold-medal match.
One of the United States' best medal contenders in BMX cycling plans to wear a brace around the left hand that he broke in the spring.
Connor Fields and the rest of his BMX teammates arrived in Rio de Janeiro on Friday for the Summer Olympics. They'll start practicing Monday, with seeding runs starting later in the week.
Fields broke a bone in the left hand while preparing for a race in April. He finally got back on the bike in June.
Fields says he has been fitted with a special brace while riding. He says the injury is not completely healed, though he's well enough to do everything he needs to do on the bike.
Fields was one of the top-ranked racers in the world before he got hurt. He's part of a deep U.S. squad full of medal hopefuls.
American diver Abby Johnston doesn't mind competing in the green-tinged water at the Maria Lenk Aquatics Center.
Well, except for one little matter.
Johnston is worried about her hair. She says "if my hair turns green, I will send my hair-dye bill to the Olympics."
Johnston posted the sixth-best score in the preliminaries of 3-meter springboard Friday, sending her to the semifinals.
As for the water at the diving pool, it seems to be getting back to normal.
MEDAL ALERT-WORLD RECORD: The British pursuit squad of Bradley Wiggins, Ed Clancy, Steven Burke and Owain Doull beat Australia in world-record time to win its third straight Olympic gold medal in the event.
Wiggins also became the most decorated Olympian in British history with his fifth gold medal and eighth overall. He was tied with retired track cyclist Chris Hoy, who also won seven medals.
Britain broke its own world record in the semifinals before topping it again in the finals, stopping the clock in 3 minutes, 50.265 seconds. That beat the Australian team of Alexander Edmondson, Jack Bobridge, Michael Hepburn and Sam Welsford, who finished in 3:51.008 to take silver.
Denmark beat New Zealand to earn bronze.
MEDAL ALERT: Dorian van Rijsselberghe of the Netherlands has clinched the men's windsurfing gold medal and Clint Dempsey of Britain has clinched the silver, the same order of finish as in the London Games in 2012.
Van Rijsselberghe and Dempsey still have to sail the medals race on Sunday. The two congratulated each other after crossing the finish line on the Atlantic Ocean on Friday after the 12th race. The Dutchman had finishes of first, first and sixth — his lowest of the series — to finish with 23 points. Dempsey, who led the first two days of the regatta, went 5-7-8 to finish for 44 points.
The bronze medal will be up for grabs on Sunday.
It's a carbon copy repeat of London 2012 when van Rijsselberghe took gold ahead of the Briton.
Australian Open champ Angelique Kerber will play for the Olympic singles gold medal after yet another big win in 2016.
The second-seeded German beat American Madison Keys 6-3, 7-5 in the semifinals Friday, saving all 10 break points she faced. Kerber will play Puerto Rico's Monica Puig for gold Saturday.
The 28-year-old Kerber made her first major final in January, stunning Serena Williams for the title in Melbourne. She got to another Grand Slam title match at Wimbledon, losing there to Williams.
But with Williams upset in the third round in Rio de Janeiro, Kerber has looked comfortable in the role of favorite. She has yet to drop a set through five rounds.
The seventh-seeded Keys will face two-time Wimbledon champ Petra Kvitova for the bronze medal Saturday.
Looking to bounce back from the disappointment of missing out on a synchronized diving medal, Jennifer Abel of Canada led the way in the preliminaries of the women's 3-meter springboard.
Abel topped the favored Chinese on Friday with a five-round score of 373.00 points. He Zi was right behind at 367.05, followed by teammate and reigning world champion Shi Tingmao at 357.55.
The top 18 advanced to Saturday's semifinals, where the field will be culled to 12 divers for the final.
The Chinese are hoping to rebound from a bronze medal in the men's springboard synchronized event, which cost the diving powerhouse a chance to sweep all eight events. They have won women's 3-meter springboard at seven straight Olympics, one short of the eight consecutive titles won by the United States from 1920-56.
A morning practice session was called off so officials would work to clean the green-tinged water. The color appeared closer to normal during the competition thought it was still a bit murky.
A Brazilian swimmer has filed a police report after receiving hateful messages on social media.
Rio de Janeiro police are investigating Facebook users who wrote offensive messages on a photo shared by swimmer Joanna Maranhao after she failed to qualify for the 200-meter individual medley final.
Maranhao went to the police station on Friday and said the comments wishing she was raped were hurtful. The 29-year-old swimmer initially expressed her anger in a post-race interview on Tuesday after the 200-meter butterfly.
Discriminatory posts are investigated by special internet crime units in Brazil and users can be punished for defamation, slander or injury.
Melanie Behringer scored a 76th-minute winner as Germany defeated China 1-0 to reach the semifinals of the women's Olympic soccer tournament on Friday.
Behringer scored with a superb long-range shot when China was already a player down because of a second yellow card shown to Wang Shanshan in the 57th.
China had a chance to tie late but Wang Shuang missed an 84th-minute penalty kick, sending her shot into the post and keeping alive Germany's hopes of winning the gold medal for the first time.
A two-time World Cup champion, Germany won the Olympic bronze three times.
It will now play either Canada of France, which play later Friday.
China won the silver medal in 1996.
MEDAL ALERT: Gong Jinjie and Zhong Tianshi have won the gold medal in the women's team sprint at the Rio Olympics, beating the Russian team of Daria Shmeleva and Anastasia Voinova in the finals.
China broke its own world record in the semifinals, beating Spain with a time of 31.928 seconds, before knocking off the Russians to improve on the silver it won at the London Games.
Gong teamed with Guo Shuang in that effort four years ago.
The German team of Miriam Welte and Kristina Vogel, the reigning Olympic champions, beat the Australian pair of Anna Meares and Stephanie Morton to claim bronze.