The Court of Arbitration for Sport has reportedly rejected an appeal by 17 Russians rowers against their ban from the Rio Olympics.
The AFP news agency and Inside The Games website reported on August 2 that the court upheld the ban by the sport's governing body FISA, which ruled that they were ineligible to compete because they could not effectively prove they were "clean."
Last week, FISA ruled that six Russians were eligible for the games but banned 17, plus two coxes, because they did not meet the International Olympic Committee's criteria of being regularly drug-tested outside Russia.
FISA had already previously banned three rowers who had served doping bans or who had been named in a World Anti-Doping Agency report that exposed Russia's "disappearing positives" doping regime.
The bans have caused some last-minute reshuffling of the Rio rowing program, after FISA said the six eligible Russian athletes could form one four-man crew.
Russia's lightweight men's four, men's and women's eight, and lightweight women's double boats have all been removed from the competition as a result of the FISA decision.