Russia’s Mariya Savinova-Farnosova has been stripped of her London 2012 Olympic gold medal and banned for four years after “clear evidence” was found that the 800-meter champion used performance-enhancing drugs. The 31-year-old’s results from July 2010 and August 2013 have been annulled, meaning she also loses her 2011 world title, 2013 world silver medal and 2010 European gold.