[gallery size="medium" td_select_gallery_slide="slide" td_gallery_title_input="Phelps rules pool as dope hits Games" ids="76330,76329,76328"] RIO DE JANEIRO — Michael Phelps blew away the competition in the Olympic pool for the 22nd time but doping reared its ugly head again Friday when Chinese swimmer Chen Xinyi was revealed as the first major case of the Rio Games. Chen's failed test after narrowly missing a bronze medal in the women's 100m butterfly was announced as athletics headed into the Olympic spotlight needing an antidote to its own doping scandals. Phelps was magnificent again in retaining his 200m individual medley title, leaving old rival Ryan Lochte stranded in fifth place. Even second place Kosuke Hagino was nearly two seconds back. China's Wang Shun took the bronze. Afterward, the 31-year-old wagged four fingers to show his four gold medals so far in Rio. That has taken him to an incredible 22 Olympic titles and 26 medals overall. "Every single day I'm living a dream come true. As a kid I wanted to do something that no one had ever done before and I'm enjoying it," said Phelps. Competing in his fifth and final Olympics, Phelps joined Al Oerter in the discus (1956-68) and Carl Lewis in the long jump (1984-96) as the only members of the exclusive four-in-a-row club. A little more than half-an-hour later, having collected his gold medal, Phelps returned to qualify fifth fastest for Friday's 100m butterfly final — another event he won in Athens, Beijing and London. Simone Manuel of the United States and Penny Oleksiak of Canada shared a dead heat victory in the women's 100m freestyle. Manuel is the first African-American woman to win an individual Olympic swimming gold. There was a stunning upset in this event as Australian world record-holder Cate Campbell inexplicably flopped. Campbell turned 0.12 inside her own world record before being caught by the two women on either side of her — Manuel and Oleksiak, who shared gold in a 52.70sec dead heat. Sweden's Sarah Sjostrom also crept by her to take bronze to complete her collection after winning gold in the 100m fly and silver in the 200m free. Campbell, incredibly, finished outside of the medals in fourth. Japan's Rie Kaneto blazed to gold in the women's 200m breaststroke, clocking 2:20.30 to deny two-time doping offender Yulia Efimova. The Russian, whose participation has provoked open hostility from rival swimmers, was a distant second with China's Shi Jinglin third. American Ryan Murphy completed a Rio double after bullying world champion Mitchell Larkin in the men's 200m backstroke, winning in 1:53.62 to underline US dominance of the event. Australian Larkin, who failed to medal in the 100m, took silver and Russia's Evgeny Rylov the bronze. But the spotlight quickly turned to 18-year-old Chen, who won a world championship gold medal last year in the 4x100m medley team. The Chinese Swimming Association said Chen tested positive for the diuretic hydrochlorothiazide after Sunday's 100m butterfly final, China's official Xinhua news agency reported. Chen came fourth just 0.09 second behind bronze medalist Dana Vollmer of the United States. Diuretics can be used to mask other banned substances. The CSA said Chen, who was due to take part in 50m freestyle heats Friday, had asked for a second test on the sample to be carried out and a hearing in the case. The United States strengthened its lead in the Olympic medals table finishing Thursday with 16 golds, five ahead of China. The specter of doping also loomed over the athletics competition. The International Olympic Committee confirmed that a second Kenyan coach had been sent home from the Games for a doping offense. Media reports named the offical as sprint coach John Anzrah, saying he had attempted to impersonate an athlete during a doping test. Last week, Kenya sent their track and field manager Michael Rotich home from the Games following allegations that he requested money to let undercover journalists, posing as athlete representatives. Lukas Krpalek claimed the Czech Republic's first ever Olympic judo medal by winning gold in the under-100kg division. Czechoslovakia won a bronze medal in the 1980 Games in Moscow boycotted by many Western nations, but this was the Czechs' first judo medal since separating from Slovakia. "It's amazing that I'm the first Czech athlete to win a medal in judo, and on top of that it's gold," said Krpalek. "It's a huge thing for the Czech Republic and also for our sport. It's a very important success." Krpalek threw Elmar Gasimov of Azerbaijan for the maximum ippon in the final with an inner reap technique before the two shared a sporting hug and soaked up the fans' acclaim in the Carioca 2 arena. The Czech had earlier ousted the reigning world champion Ryunosuke Haga of Japan. Cyrille Maret of France slammed Germany's Karl-Richard Frey into the mat for ippon to win bronze while Haga submitted Ukraine's Artem Bloshenko with a triangle choke to claim the other bronze medal. Romania took its first medal of the Games, as its women's epee team soundly beat China's defending champion to win the country's first-ever team fencing gold. Estonia just missed its first Olympic fencing medal as Russia won the bronze bout, racking up five medals in the sport over as many days, its best at the Games since at least 2000.
