Rachael Denhollander, the first woman to publicly accuse former USA Gymnastics doctor Larry Nassar of sexual abuse, told Reuters that Russian skating prodigy Kamila Valieva's failed drug test is a reminder of how vulnerable young athletes remain.

The 15-year-old Valieva (above) helped the Russian Olympic Committee (ROC) to a team gold in Beijing after landing the first quadruple jump in the Games competition on Monday.