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IAAF to use study saying female athletes get large testosterone boost in rule appeal

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A scientific paper published Monday found that women who produce higher-than-normal amounts of testosterone have up to a 4.5 percent advantage over their competition on the track, evidence the sport’s governing body will use to potentially sideline Olympic gold medalist Caster Semenya and others with so-called intersex conditions.

The International Association of Athletics Federations will use the new study in its appeal to the Court of Arbitration for Sport, which suspended an IAAF rule that enforced a limit on female athletes’ naturally occurring testosterone levels. The appeal will not affect this year’s world championships, where Semenya is expected to go for her third title at 800m

The study, funded by IAAF and the World Anti-Doping Agency, and published in the British Journal of Sports Medicine, analyzed more than 2,100 androgen samples from athletes participating in the 2011 and 2013 world championships.

It found females with higher testosterone levels received a competitive advantage of 1.8 percent to 4.5 percent over female athletes with lower testosterone levels in 400- and 800-meter races, hammer throw and pole vault.

“If, as the study shows, in certain events female athletes with higher testosterone levels can have a competitive advantage of between 1.8 to 4.5 percent over female athletes with lower testosterone levels, imagine the magnitude of the advantage for female athletes with testosterone levels in the normal male range,” said one of the study’s authors, Stephane Bermon.

In 2011, the IAAF enacted a rule to force athletes with hyperandrogenism to artificially lower their testosterone levels to be eligible to compete.

Dutee Chand of India contested the rule and CAS overturned it in time for last year’s Olympics. CAS gave the IAAF two years to produce evidence that hyperandrogenism led to an unfair advantage. IAAF will submit the paper, but said it would have no further comment until the case is concluded.

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MORE: Felix-Semenya clash unlikely for world champs

Suspect confesses to Denis Ten killing

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MOSCOW (AP) — One of two men detained in Kazakhstan on suspicion of killing Olympic figure skating medalist Denis Ten has confessed, authorities said Friday.

Prosecutor Berik Zhuyrektayev said in a televised statement that Nuraly Kiyasov “confessed his guilt in the presence of an attorney” while being questioned over the 25-year-old skater’s death Thursday in the Kazakh city of Almaty.

The prosecutor didn’t give further details of what exactly Kiyasov had said.

Police have also detained 23-year-old Arman Kudaibergenov in connection with Ten’s death, which has prompted national mourning. Authorities released a picture of the disheveled-looking man being held by masked men wearing body armor and camouflage uniforms.

Ten was stabbed after a dispute with people who allegedly tried to steal a mirror from his car in his home city of Almaty. He died in hospital of massive blood loss from multiple wounds, the Kazinform news agency said.

Prosecutors are treating his death as murder.

Kazinform reported that Kiyasov was taken to the scene of the crime under heavy security Friday as part of the investigation.

Ten’s bronze in Sochi in 2014 made him Kazakhstan’s first Olympic medalist in figure skating. He also won the Four Continents Championships in 2015 and was a world silver medalist in 2013.

He struggled with injuries in recent years and could only finish 27th at the PyeongChang Olympics.

Ten had been working on a script in recent months which the Kazakh-Russian director Timur Bekmambetov said Friday would now be turned into a movie.

“We’re definitely going to try to realize his idea and shoot a film dedicated to this multi-talented person,” Bekmambetov said in comments released by Kazakhstan’s embassy to Russia. “In his 25 years, Ten managed to do very much and had grand plans which he would surely have put into practice because he was a real hard worker.”

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Peter Sagan wins another Tour de France stage in sprinters’ absence

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VALENCE, France (AP) — Peter Sagan won his third stage of this Tour de France, while Geraint Thomas kept the overall lead over teammate Chris Froome on Friday.

World champion Sagan won a sprint finish by a wheel length to claim Stage 13, a 105-mile leg from Bourg d’Oisans to Valence in less than four hours.

After overzealous fans marred Thomas’ win on Thursday atop the Alpe d’Huez, the otherwise complete calm of Friday’s leg was briefly disturbed by a man on the roadside who tossed a smoke bomb into the center of the peloton as it passed by with 16 kilometers left.

Besides spitting out yellow smoke, the bomb appeared to do no harm.

Thomas took charge of the race with impressive wins atop summit finishes on the previous two days.

The Welsh rider for Sky had no trouble maintaining his advantage of 1 minute, 39 second over defending champion Froome on the flat ride that came after three grueling days in the Alps.

Both Team Sky riders finished safely in the pack with their top rivals.

Tom Dumoulin stayed third overall at 1:50 behind. Primoz Roglic was fourth at 2:46, and Romain Bardet was fifth at 3:07 back.

Sagan timed his move perfectly, charging forward to overtake runner-up Alexander Kristoff and Arnaud Demare, who finished third, at the finish line.

The Slovakian’s 11th career Tour victory came after he dominated sprints at the end of Stages 2 and 5.

This time, Sagan was racing against a field of top sprinters who had been greatly depleted by the mountains.

Fernando Gaviria and Dylan Groenewegen, who both won two stages on this Tour, along with Andre Greipel all abandoned the race on Thursday, while 30-stage winner Mark Cavendish and Marcel Kittel failed to make the time cut on Wednesday.

On Thursday’s action-packed ascent up Alpe d’Huez, contender Vincenzo Nibali was forced to abandon the race after he broke a vertebra when knocked to the ground by a police motorbike tasked with keeping back the pressing fans (video here).

Froome also was pushed hard in the back by a spectator, and Thomas was booed on the podium by fans who are skeptical of Froome’s clearance from doping allegation just before the Tour’s start.

Michael Schaer of BMC was the last rider of a four-man breakaway to be reeled in with 6K left.

The Tour continues Saturday with a hilly stage 14, live on NBCSN and NBC Sports Gold (full broadcast schedule here).

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