Russian Bobsledder Tests Positive for Banned Substance: Federation Unknown 01:57 IFTTT, Top Sports News- News18.com Russian Olympic bobsledder Nadezhda Sergeeva has tested positive for a banned performance-enhancing drug, the Russian bobsleigh federation said in a statement on Friday. from Top Sports News- News18.com http://ift.tt/2otfOyz via IFTTT Share this Share on FacebookTweet on TwitterPlus on Google+