Winter Olympics drug testing: Russian athlete who wore 'I don't do doping' shirt busted for doping

Nadezhda Sergeeva wore this 'I don't do doping' jumper before the 2018 Winter Olympic. Photo / Instagram.

Russian athlete Nadezhda Sergeeva has tested positive for a banned substance at the Winter Olympics just days after ironically wearing an 'I don't do doping' jumper in a promotional video.

Sergeeva became the second Russian to test positive for a banned substance at Pyeongchang 2018, heaping even more embarrassment on the International Olympic Committee.

Sergeeva, who finished 12th in the two-woman bob with Anastasia Kocherzhova, failed a test for the stimulant trimetazidine.

It comes less than 24 hours after Aleksandr Krushelnitckii was stripped of his mixed doubles curling bronze medal and a day before the IOC discuss whether the Russian's Olympic ban can be lifted in time for Sunday's closing ceremony.

Nadezhda Sergeeva wore this 'I don't do doping' jumper before the 2018 Winter Olympics. Photo / Instagram.

The failed test exposes to ridicule the decision by the IOC in December to ban Russia for state-sponsored doping only to allow 168 athletes to compete here on the basis of proving they were clean.

Half of the four positive tests in Pyeongchang have now come from Russians with a Slovenian hockey player and a Japanese speedskater making up the rest of the failed doping tests.

Sergeeva tested positive for meldonium in 2016 but was given a reprieve after WADA issued an amnesty for athletes who had a low dose of the substance.

Confirmation comes on the day that Alina Zagitova, 15, won a first gold medal of the Games for the Olympic Athletes from Russia team in the women's singles skating.