Sergui Sednev of Ukraine competing in 2013 World Championships in Nove Mesto, Czech Republic; the re-analyzed sample in which IBU officials found a prohibited substance dated from January 22, 2013, before the Championships.

Chelsea Little

Chelsea Little is FasterSkier's Editor-At-Large. A former racer at Ford Sayre, Dartmouth College and the Craftsbury Green Racing Project, she is a PhD candidate in aquatic ecology in the @Altermatt_lab at Eawag, the Swiss Federal Institute of Aquatic Science and Technology in Zurich, Switzerland. You can follow her on twitter @ChelskiLittle.