Doping

FILE - This is a Sunday, Aug. 14, 2016 file photo of Kenya's Jemima Sumgong as she celebrates winning the women's marathon during the Summer Olympics athletics event in Rio de Janeiro, Brazil. Olympic marathon champion Jemima Sumgong of Kenya on Tuesday Nov. 7, 2017 was banned four years for using the banned blood-booster EPO. Sumgong's ban was announced by the Anti-Doping Agency of Kenya. The agency ruled her ineligible from April 3 this year. The gold medalist at the Rio de Janeiro Games failed an out-of-competition doping test on Feb. 28. (Johannes Eisele/Pool Photo via AP)

FILE - In this Sept. 1, 2016, file photo, Cleveland Browns wide receiver Josh Gordon warms up before an NFL preseason football game against the Chicago Bears in Cleveland. On the cusp of his return from NFL suspension, Browns wide receiver Josh Gordon says he used drugs or alcohol before every game of his career, Monday, Nov. 6, 2017. Gordon, who was reinstated on a conditional basis last week by Commissioner Roger Goodell, tells GQ magazine he drank or smoked marijuana before games. He added “a bunch of guys smoke weed before the game.” (AP Photo/David Richard, File)

FILE- In this Sunday, Feb. 23, 2014 file photo, Russia's gold medal winner Alexander Legkov gestures to the crowd during the flower ceremony of the men's 50K cross-country race at the 2014 Winter Olympics in Krasnaya Polyana, Russia. The International Olympic Committee said Wednesday, Nov. 1st, 2017, cross-country skier Alexander Legkov has been disqualified from all his events at Sochi. Legkov won an individual gold medal and relay silver. (AP Photo/Gregorio Borgia, File)

A baseball is seen before Game 5 of baseball's World Series between the Houston Astros and the Los Angeles Dodgers Sunday, Oct. 29, 2017, in Houston. (AP Photo/David J. Phillip)

FILE - In this Feb. 2, 2017, file photo, Tiger Woods reacts on the 10th hole during the first round of the Dubai Desert Classic golf tournament in Dubai, United Arab Emirates. The diversion program for intoxicated drivers that Woods is expected to enter Friday, Oct. 27, is one of several across the U.S. aimed at reducing the number of repeat offenders and backlogs of court cases. (AP Photo/Kamran Jebreili, File)

FILE- In this March 4, 2017, file photo, four-time and defending champion Dallas Seavey mushes during the ceremonial start of the Iditarod Trail Sled Dog Race in Anchorage, Alaska. Seavey denies he administered banned drugs to his dogs in this year's race, and has withdrawn from the 2018 race in protest. The Iditarod Trail Committee on Monday, Oct. 23, 2017, identified Seavey as the musher who had four dogs test positive for a banned opioid pain reliever after finishing the race last March in Nome. (AP Photo/Michael Dinneen, File)

FILE - This is a June 3 , 2013, file photo showing Denis Oswald speaking during a press conference in Lausanne, Switzerland. Oswald, leader of an IOC delegation in charge of reviewing 28 cases involving athletes at Sochi, wrote to the head of the IOC Athletes Commission this week to update the timeline of cases stemming from a report detailing a Russian doping scheme at the 2014 Olympics and beforehand. Investigators expect to have “a number” of doping cases involving Russians at the Sochi Olympics resolved by the end of November, but they have no plans to dictate the eligibility of these athletes for next year’s Winter Games in Pyeongchang. (Laurent Gillieron/Keystone via AP, File)

Maria Sharapova of Russia celebrates with her fans after defeating Aryna Sabalenka of Belarus in their women's singles final at the Tianjin Open tennis tournament in north China's Tianjin Municipality, Sunday, Oct. 15, 2017. (Chinatopix Via AP)