RIO DE JANEIRO (AP) — The Latest on the Olympics in Rio de Janeiro (all times local):

1:50 p.m.

MEDAL ALERT: Marit Bouwmeester of the Netherlands has won the gold medal in the women's Laser Radial class in the Rio Olympics sailing regatta.

Bouwmeester, who won the silver in London four years ago, was seventh in the medal race Tuesday and finished six points ahead of silver medalist Annalise Murphy of Ireland. Murphy finished fourth in London after dominating early in that regatta.

The bronze medal went to Anne-Marie Rindom of Denmark.

Defending bronze medalist Evi Van Acker of Belgium finished fourth. Van Acker fell ill earlier in the regatta and struggled. Her coach said she contracted a severe intestinal infection while training on polluted Guanabara Bay last month.

The race had been scheduled for Monday but was postponed due to high winds.

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1:35 p.m.

Argentina has reached its first Olympic final in men's field hockey after thrashing defending two-time champion Germany 5-2.

Gonzalo Peillat scored three times from penalty corners in the first half, and Agustin Mazzilli and Lucas Vila added second-half goals for Argentina's biggest win over Germany in a major event.

Captain Moritz Furste and Christopher Ruhr scored for Germany.

Netherlands and Belgium play the second semifinal late.

Germany was riding an incredible streak of luck from scoring in the last 8 seconds of three games, including a 4-4 draw with Argentina in pool play last Thursday. But Argentina wasn't fazed, having lost to the Germans only once in seven previous major matches in two years.

Los Leones, the Lions, are guaranteed their first medal in 11 Olympics, out of the shadow of their great women's side, who medaled in the last six games but lost to archrival the Netherlands in the quarterfinals Monday.

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1:30 p.m.

Cao Yuan of China was top qualifier in the semifinals of the men's 3-meter springboard at the Rio Olympics.

Yuan blew away the field, finishing with a score of 489.10 points to advance to the evening final.

Rommel Pacheco of Mexico was next at 469.70, just ahead of Russia's Evgenii Kuznetsov (468.35) and Mike Hixon of the United States (467.25).

The top 12 will compete for the gold at the Maria Lenk Aquatic Center.

Cao will be trying to give China its fifth diving victory in six events at Rio. He'll have to go it alone after his teammate, He Chao, stunningly failed to advance out of the preliminaries.

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1:20 p.m.

The busiest day at the Rio Olympics boat basin is underway with the women's Laser Radial medal race on the Sugarloaf Course just off Flamengo Beach.

It's the first of four medal races scheduled for Tuesday. The Laser Radial and men's Laser medal races were postponed from Monday, when first there was too little wind, and then too much wind to sail.

The Laser Radials went off at 1:05 p.m. The Lasers were to follow at 1:50, followed by the Finn men and 2:35 p.m. and the Nacra 17 mixed catamaran crews at 3:20.

Britain's Giles Scott has already clinched the gold medal. American Caleb Paine of San Diego has a chance at the bronze.

The 470 men and women are scheduled to sail their final three preliminary races. Their medal races are Wednesday.

The 49er men and 49erFX women are scheduled to sail their final three races as well. Their medal races are Thursday, wrapping up the regatta.

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1 p.m.

Usain Bolt's bid for a triple-sprint double is on track after winning his preliminary heat in the 200 meters.

After winning a gold medal in the 100 for a third consecutive Olympics, Bolt has turned his focus to lowering his world record mark of 19.19 mark in the 200-meters.

On Tuesday, he powered out of the blocks and ran hard out of the curve before slowing down to win heat 9 in 20.28 seconds.

Semifinals in the 200-meters are set for Wednesday the final for Thursday. Bolt is looking to win this eighth Olympic gold medal.

Two other Jamaicans were among the fastest times, with London 2012 silver medalist Yohan Blake running 20.13 and Nickel Ashmeade finishing in 20.15.

Justin Gatlin got some cheers from the crowd this time, a contrast to the booing that greeted his introductions for the semifinals and the final of the 100 on Sunday. The American won his heat in 20.42.

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12:50 p.m.

Sandra Perkovic stared early elimination in the face twice in as many days, and came through with her second Olympic gold to show for it.

Perkovic was in real trouble in Tuesday's final after she threw the discus in the protective netting on her first two attempts, and she jumped up and down in the circle in frustration.

But she had the discus throw of the Rio Olympics with 69.21 meters on her third attempt. Her plight had been identical in Monday's rainy qualifying, when she threw her only legal mark in her last attempt.

Melina Robert-Michon was just as happy Tuesday with her French record of 66.73 meters for the silver.

World champion Denia Caballero of Cuba took bronze with 65.34.

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12:45 p.m.

Cuba has chance to win a gold medal in Greco-Roman wrestling for the third day in a row Tuesday after Yasmany Daniel Lugo Cabrera qualified for the finals at 98 kilograms.

But Lugo Cabrera will face a tough challenge in Artur Aleksanyan of Armenia. Just 24, Alexsanyan is a two-time defending world champion.

Serbia's Davor Stefanek also will wrestle for a Greco-Roman gold medal after upsetting top-seeded German Frank Staebler in the quarterfinals.

Stefanek's opponent at 66 kilograms will be Armenia's Migran Arutyunyan, a relative newcomer who has never finished higher than fifth in the world.

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12:40 p.m.

The International Cycling Union says the mountain bike course at the Rio Olympics was not damaged by a wildfire.

The UCI says it checked the course Tuesday, and that it has "not suffered any damage which will affect the competition or the integrity of the venue."

National Olympic Committees also were being allowed to do their own inspections later Tuesday.

A wildfire Monday about 10 miles from the Olympic field hockey venue littered ash on the playing surface there. The mountain bike center is about 2 miles from that venue.

Practice on the mountain bike course is scheduled to begin Wednesday. The women's race will be held Saturday, with the men's race on Sunday.

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12:40 p.m.

Ousted without a medal, Michael Conlan at least stakes a claim as the undisputed champion of post-fight tirades.

The Irish boxer flipped out when he lost a unanimous decision in a bantamweight bout that cost him a shot at fighting for a medal. The 24-year-old Conlan stripped off his vest, stormed around the ring made an obscene gesture toward the judges. He gave two thumbs down in the ring and gestured toward booing fans.

Conlan, a bronze medalist in the 2012 London Games, took his time leaving the ring and didn't put his vest on when he talked to reporters.

He even grabbed a microphone at one point in the mixed zone to loudly state his case he was robbed of his Olympic dream.

Russia's Vladimir Nikitin won the decision in a close bout.

Conlan used profanity in a tirade directed at the International Boxing Association (AIBA) and said he would never fight in an amateur bout again.

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12:30 p.m.

MEDAL ALERT: Sandra Perkovic of Croatia won her second Olympic discus title.

After throwing her first two attempts into the protective netting, Perkovic threw 69.21 meters. Melina Robert-Michon won silver with a French record of 66.73.

World champion Denia Caballero of Cuba took bronze with 65.34.

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12:20 p.m.

American Will Claye got the silver and then proposed to American hurdler Queen Harrison.

The American runner-up in triple jump celebrated his medal by jumping into the stands at the Olympic stadium, getting down on one knee and proposing to Harrison.

She said yes.

Engagements are all the rage these Olympics.

Only two days earlier, China's He Zi had the silver medal slipped around her neck when her boyfriend pulled out a ring and asked her to marry him.

Last week, after a rugby match, the girlfriend of Brazilian player Isadora Cerullo went down to the field and asked Cerullo to marry her.

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12:20 p.m.

The anti-doping laboratory in Beijing is re-opened for testing after a ban of nearly four months.

The World Anti-Doping Agency says it lifted a suspension and reaccredited the lab to test urine and blood samples.

The suspension meant much testing of Chinese athletes ahead of the Rio de Janeiro Olympics was taken out of China's hands.

WADA did not specify exactly which working standards the Beijing lab had failed to merit a ban, though said "five remedial steps" were now achieved.

Labs also temporarily suspended year or still closed down include the Rio lab, and others in Russia, Spain, South Africa, Portugal and Kazakhstan.

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12:15 p.m.

The United States women's field hockey team placed fifth at the Olympics, the program's best finish in 20 years.

The Americans lost their quarterfinal match to Germany on Monday. Their final ranking is based on their second-place finish in pool play.

The Americans also placed fifth at the 1996 Games in Atlanta. Their only better finish was third at the 1984 Games. This year's squad set program records for most wins in pool play with four, and most goals in an Olympic match, with six against Japan.

The Americans defeated No. 2 Argentina and No. 3 Australia in their first two matches, then knocked off Japan and India to take the lead in Pool B. The United States led its final pool match against Britain heading into the fourth period before losing 2-1.

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11:55 a.m.

Britain could claim three more gold medals and five more total after its riders all advanced through preliminary rounds during the morning track cycling session at the Rio Games.

Becky James and Katy Marchant swept through the women's sprint quarterfinals, and Jason Kenny and Callum Skinner are alive in the keirin. Laura Trott leads the multidiscipline omnium.

Track cycling concludes with the finals in all three events Tuesday night.

IOC president Thomas Bach took in the session with UCI president Brian Cookson, the head of cycling's world governing body. Bach also turned out to watch the end of the Olympic road race.

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11:50 a.m

Floyd Mayweather Jr. is still the biggest star at the Olympic boxing tournament.

The U.S. bronze medalist at the 1996 Atlanta Games was back to watch another day of fights. He smiled when he was shown and introduced on the big screen to a roaring ovation. Dozens of fans hurried his way for pictures. He never took the earbuds attached to his mobile phone out of his ears when he posed for a few fans.

They were quickly shooed away and blocked off by members of Mayweather's friends known as TMT: The Money Team.

Mayweather invited Popo Freitas, a former Brazilian boxing world champion, down to his seat for a quick chat.

He seemed to enjoy the fights from the front row of the bleacher seats. There are no ringside seats at the venue.

The 39-year-old Mayweather retired last year after a 49-0 career. The International Boxing Association (AIBA) changed its rules this year to allow professionals to fight at the Olympics, but Mayweather had no interest.

Mayweather has dropped in once or twice since he arrived for the Rio Games.

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11:50 a.m.

Netherlands has finished off a sweep of the Olympic open water swimming races with a thrilling victory in the men's 10-kilometer race.

Ferry Weertman captured the gold medal at Copacabana after Greece's Spiros Gianniotis crossed under the finish line first but reached up after the Dutchman to touch the timing pad.

That gave the victory to Weertman in a time of 1 hour, 52 minute, 59.8 seconds, one day after Sharon van Rouwendaal took the women's race for the Netherlands.

Gianniotis missed a chance to give Greece its first swimming gold since the inaugural Olympics in 1896.

The bronze went to France's Marc-Antoine Olivier, who out-touched China's Lijun Zu. American Jordan Wilimovsky was fifth.

Australia's Jarrod Poort broke away from the pack early in the race, building a lead of more than a minute at the midway point. He couldn't hold on, getting passed on the last of four laps and finishing 20th.

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11.45

The morning after the stunning win of Thiago Braz da Silva in the men's pole vault, home favorite Fabiana Murer failed to qualify for the women's final.

With three fouls on her opening of 4.55 meters, Murer ended up with no measure. Her personal best is 4.87, and the height in sunny, windless conditions should not have posed too many problems.

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11:30 a.m.

MEDAL ALERT: Ferry Weertman has given the Netherlands a sweep of the Olympic open water swimming events, winning the men's 10-kilometer race at the Rio Olympics. Spiros Gianniotis of Greece takes the silver and France's Marc-Antoine Olivier claims the bronze.

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11:25 a.m.

Taoufik Makhloufi had little time to enjoy his 800 meter silver medal at the Olympics. Tuesday morning, barely 12 hours later, it was back to work, qualifying for the 1,500 semifinals. The Algerian made sure he won his heat in 3 minutes 46.82 seconds, almost 20 seconds slower than his personal best. And almost 8 seconds behind the qualifying time of Kenyan favorite Asbel Kiprop.

Still, silver around his neck boosted his confidence for a second medal. "This gives me great hope for the 1,500. It's like a bonus," he said. "It is the first time to do 800 and 1500 in a big championship."

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11:25 a.m.

Christian Taylor and Will Claye have done it again, sweeping gold and silver in the triple jump for the United States at back-to-back Olympics.

Taylor successfully defended the Olympic title he won in London in 2012, setting down the benchmark on Tuesday with a season-leading mark of 17.86 on his first attempt. He posted the three best jumps of the competition.

Claye finished with silver again with a personal record of 17.76. He also won a bronze in the long jump at London, when he was the first man since 1936 to win medals in both the horizontal jumps.

World indoor champion Dong Bin of China won bronze in a personal record 17.58.

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11:05 a.m.

MEDAL ALERT: Christian Taylor has successfully defended his Olympic triple jump title, leading Will Claye in a repeat U.S. sweep of gold and silver medals.

Taylor, who won gold in London in 2012 at 17.81, set the benchmark on Tuesday with a season-leading mark of 17.86 on his first attempt.

Claye was second again and Dong Bin of China won bronze.

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AP Summer Games website: http://summergames.ap.org