Sochi gold medalist among 4 Russians banned for doping

LAUSANNE, Switzerland — The International Olympic Committee has banned four more Russians for doping at the 2014 Sochi Games, including a gold medalist. The four all competed in skeleton and include men’s gold medalist Alexander Tretyakov and women’s bronze medalist Elena Nikitina. Two other Russian women who didn’t win medals, Maria Orlova and Olga Potylitsina,