Olympic curling medalist Alexander Krushelnitsky has headed home in disgrace.<br />The Russian athlete has been charged with a doping offense by the Court of Arbitration for the Sport.<br />According to the court, he tested positive for meldonium, which is a banned substance that increased blood flow and improves exercise.<br />The 25-year-old won the bronze medal last week at the 2018 Winter Olympics PyeongChang.<br />However, it is expected that he will be stripped of his medal. <br />
