Turkish runners Elvan Abeylegesse and Gamze Bulut have been banned for doping and stand to lose their Olympic silver medals.
Abeylegesse tested positive for Stanozolol (Winstrol), the banned steroid, in a retest of a sample she gave at the 2007 world championships. She was banned for two years by the IAAF and had her results wiped out from 2007 to 2009.
Abeylegesse won Olympic silver medals in the 5,000 and 10,000 meters at the 2008 Beijing Games and silver in the 10,000 at the 2007 world championships.
Shalane Flanagan now is likely to get the silver medal in the 10,000, with third for Linet Chepkwemoi Masai of Kenya. In the 5,000, Meseret Defar of Ethiopia would get silver and Sylvia Kibet of Kenya would get bronze.
A ban of four years was imposed by the world governing body of athletics on Bulut for a violation of its biological passport program. The results of Bulut from July 2011 have been wiped out, which will cost her the silver medal in the 1,500 at the 2012 London Olympics. She finished behind Turkish runner Asli Cakir Alptekin, who has also since been banned. Bulut has also been disqualified from the 2012 European championship, when she originally finished second behind Alptekin in the 1,500. Maryam Yusuf Jamal of Bahrain stands to inherit gold, with silver for Tatyana Tomashova of Russia, who has previously served a ban for providing urine of someone else in a doping test. The bronze medal would now go to Abeba Aregawi, who represented Ethiopia in 2012 but now races for Sweden.