MOSCOW -- Two-time Olympic biathlon champion Olga Medvedtseva of Russia is retiring from the sport, ending a career marred by a doping violation that led to her being kicked out of the Turin Games.
Medvedtseva made the announcement after Sunday's mixed relay race at the World Cup finals, but said her decision was made several months ago.
The 34-year-old Russian competed as Olga Pyleva at the 2006 Turin Olympics, where she tested positive for a banned substance and was stripped of a silver medal.
She got redemption in Vancouver, where her perfect shooting helped Russia win gold in the women's relay.
She also won gold in the pursuit in the 2002 Salt Lake City Games.