You're reading: CNN: Olympic doping ban overturned for 28 Russian athletes

Doping bans on 28 Russian athletes were overturned on February 1, throwing the International Olympic Committee’s policy on Russia doping into chaos just over a week before the start of the Winter Games in South Korea.

The Court of Arbitration for Sport (CAS) upheld the appeals of athletes given lifetime Olympic bans for doping violations at the 2014 Sochi Winter Games, saying there was insufficient evidence to show they had broken the rules.