The World Anti-Doping Agency (WADA) has accused Russia of severe mistakes in the case of 15-year-old figure skater Kamila Valieva’s positive doping test. A statement Monday, after the Court of Arbitration for Sport rejected an appeal from WADA and others against the lifting of Valieva’s provisional suspension, said it was expected anti-doping bodies “liaise with the laboratories in order to ensure they expedite the analysis of samples” so results are received prior to athletes travelling to major events. Valieva’s sample taken on December 25 returned positive for the prohibited heart medicine …