FILE - In this Friday, Dec. 15, 2017 file photo, Russia's winner Elena Nikitina celebrates after the women's Skeleton World Cup race in Innsbruck, Austria. Russian skeleton slider Elena Nikitina says she's aiming to compete at the Pyeongchang Olympics after the Court of Arbitration for Sport overturned her doping ban. (AP Photo/Kerstin Joensson, File)
FILE - In this Feb. 23, 2014 file photo Russia's gold medal winner Alexander Legkov smiles during the flower ceremony of the men's 50K cross-country race at the 2014 Winter Olympics in Krasnaya Polyana, Russia. The Court of Arbitration for Sport ruled on Thursday, Feb. 1, 2018 to reinstate Leskov as gold medal winner of the men's 50-kilometer cross-country skiing which he was stripped of on doping allegations earlier. (AP Photo/Gregorio Borgia)