CAS Issues Decisions in the Cases of Tatyana Chernova, Ekaterina Sharmina and Kristina UgarovaAll 3 athletes have been found to have committed an Anti-doping rule violation pursuant to the IAAF Competition Rules. CAS Issues Decisions in the Cases of Five Russian RacewalkersCAS has issued decisions in the cases of Russian racewalkers who all tested positive for EPO at the Saransk race walking centre.