Russian Runner Stripped of 2012 Olympics Title for Doping

Russia's Natalya Antyukh (R) powers ahead of United States' Lashinda Demus to win gold in the women's 400-meter hurdles final during the athletics in the Olympic Stadium at the 2012 Summer Olympics in London on Aug. 8, 2012. Daniel Ochoa De Olza/AP Photo

MONACO—Russian runner Natalya Antyukh was disqualified on Monday from her 400-meter hurdles win at the 2012 London Olympics for doping, and Lashinda Demus of the United States is set to be upgraded to the gold medal.

Antyukh was already serving a four-year ban in a previous case judged by the Court or Arbitration for Sport last year that stripped her results from 2013 to 2015.