The longtime director of Russia’s lab, Grigory Rodchenkov,
told The New York Times that after he was cleared to run the Sochi lab, he had tampered with roughly 100 of the 1,917 urine samples the facility tested. He said he had substituted out the steroid-laced urine of dozens of Russian athletes, at least 15 of whom won medals at Sochi — where Russia placed first in the overall medal count.