LONDON — Three things to know about Wednesday, Day 5 of the London Olympics:

—Badminton flap talk of London Games.

—Uchimura on top of men’s gymnastics.

—Britain gets first 2 golds of games.

———

The crowd booed as the badminton players dumped shots into the net, trying to improve their positioning for the next round. The umpire and tournament referee Torsten Berg issued warnings, imploring them to exert maximum effort.

Badminton’s governing body finally had its say Wednesday, and it wasn’t pleased, either.

Four teams were kicked out of the women’s doubles at the London Games for trying to lose on purpose, and a couple of the sport’s top players said they were embarrassed by the whole episode.

The eight doubles players from China, South Korea and Indonesia were cited by the Badminton World Federation for “conducting oneself in a manner that is clearly abusive or detrimental to the sport.”

“We have to be clear, there has been a problem here and we have to take that problem very seriously,” BWF secretary general Thomas Lund said. “There are things we can improve on and look at after this competition.”

South Korea and Indonesia appealed the disqualification, but the BWF rejected the South Korean appeal and the Indonesia challenge was withdrawn. China had accepted the federation’s earlier decision.

“We applaud the federation for having taken swift and decisive action,” IOC spokesman Mark Adams told The Associated Press. “Such behavior is incompatible with the Olympic values.”

The eight disqualified players are world doubles champions Wang Xiaoli and Yu Yang of China and their South Korean opponents Jung Kyun-eun and Kim Ha-na, along with South Korea’s Ha Jung-eun and Kim Min-jung and Indonesia’s Meiliana Jauhari and Greysia Polii.

The players went before a disciplinary hearing Wednesday, a day after spectators at the arena booed their performance after it became clear they were deliberately trying to lose.

Kohei Uchimura wanted to lead Japan to the gold medal in men’s gymnastics, but he struggled in the final and settled for silver.

It was a much different story in the all-around competition.

Uchimura added Olympic gold to the world titles he’s won the last three years, and it was never much of a contest. Midway through the meet, the only question was how big his victory would be and who would be standing next to him on the medals podium.

Uchimura’s score of 92.690 was more than 1.5 points ahead of silver medalist Marcel Nguyen of Germany. American Danell Leyva got the bronze.

“I have been a world champion three times, three years in a row. But this is different,” Uchimura said. “It’s once in four years, and the wait was there. I felt like the demon was chasing me this time.”

Host Britain picked up its first two gold medals of the games when Helen Glover and Heather Stanning won the final of the women’s pair at the rowing regatta and cyclist Bradley Wiggins took the time trial, delighting the crowd at Hampton Court Palace on the banks of the River Thames.

American Kristin Armstrong defended her title in the women’s time trial, beating Judith Arndt of Germany by more than 15 seconds to get the gold.

FENCING

Two-time Olympic sabre champion Mariel Zagunis, who carried the American flag at the opening ceremony, lost her last two matches and failed to make the podium.

Kim Jiyeon of South Korea won the gold, beating Russia’s Sofya Velikaya in the final. Olga Kharlan of Ukraine got the bronze.

Seth Kelsey of the U.S. also dropped his last two matches in men’s individual epee, leaving him without a medal as well. Venezuela’s Ruben Limardo, Norway’s Bartosz Piasecki and Jung Jinsun of South Korea took the top three spots.

DIVING

China completed a sweep of the synchronized diving events, winning the men’s 3-meter springboard to move halfway toward taking each of the diving gold medals.

Qin Kai and partner Luo Yutong led all six rounds of the final, totaling 477.00 points. Ilya Zakharov and Evgeny Kuznetsov of Russia took the silver at 459.63.

Kristian Ipsen and Troy Dumais of the U.S. earned the bronze at 446.70. It was the first medal of Dumais’ long career in his fourth Olympics, equaling Greg Louganis for most appearances by a male U.S. diver.

WATER POLO

Maica Garcia scored twice in the last two minutes as Spain rallied for a 9-9 draw with the United States in the women’s tournament.

Rowie Webster scored five goals in Australia’s easy 16-3 win over Britain. Hungary beat China 11-10, and Russia edged Italy 7-4.

The U.S. plays China on Friday.

ROWING

Germany lived up to its billing as the favorite for the men’s eight, producing a late burst to get the win at Dorney Lake.

Canada captured silver, falling short in its bid to defend its gold medal from Beijing. Britain settled for bronze.

Ukraine won its first Olympic rowing gold medal in women’s quadruple sculls. The Germans took silver and the U.S. was third.

TABLE TENNIS

China’s first table tennis gold of the games went to Li Xiaoxia, who upset teammate Ding Ning.

Li raced to the stands to get a Chinese flag and waved it around for a few moments, but her celebration was mostly subdued. Usually upbeat and open, Ding cried afterward and suggested Italian referee Paola Bongelli may have cost her a gold medal.

Feng Tianwei of Singapore defeated Kasumi Ishikawa of Japan for bronze. Feng was born in China and was recruited to play in Singapore when it became clear she would not make China’s team.

ELSEWHERE IN LONDON

Italy’s Daniele Molmenti raced to the gold in kayak slalom on his 28th birthday. ... Judo golds were awarded to France’s Lucie Decosse (women’s 70-kilogram) and South Korea’s Song Dae-nam (men’s 90-kg). ... Kim Jang-mi of South Korea won the women’s 25-meter pistol after setting an Olympic record for the best qualification score. ... Lu Xiaojun set snatch and total world records as China won the Olympic gold and silver medals in the men’s 77-kilogram weightlifting category. North Korea’s third weightlifting gold medal was awarded to Rim Jong Sim, who clinched the women’s 69-kilogram class in a dramatic finish. Rim lifted a total weight of 261 kilograms but was challenged until the end by Romania’s Roxana Cocos, who would have moved into first placed if she hadn’t failed with her final lift. ... Lin Dan advanced to the quarterfinals in his badminton title defense, beating Taufik Hidayat 21-9, 21-12 in a matchup of Olympic champions.