Positive re-tests of doping samples from the '08 and '12 Olympics have left IOC President Thomas Bach with "real concerns about Russia, as well as the sport of weightlifting," according to Karolos Grohmann of REUTERS. About 100 Russian athletes were banned from competing at the Rio de Janeiro Games in August following "revelations of a widespread and state-backed doping system in the country." Another World Anti-Doping Agency-commissioned report will be published on Friday and is "expected to pile more pressure on the country whose federation remains banned from athletics." Re-tests of doping samples from the Beijing and London Games conducted by the IOC have caught 101 doping offenders, "with Russia having the most cases." Of the 74 named athletes, 27 are Russians, with 16 positive tests coming from '08 and 11 from '12. Bach said, "The first analysis shows already that re-testing raises concerns with regard to some countries, in particular Russia, and with regard to some sports, in particular weightlifting. We will have to analyze this in more depth and consult with the WADA about this situation" (REUTERS, 12/8).