Doping is the use of banned athletic performance-enhancing drugs. It is prohibited by the International Olympic Committee (IOC). In Sochi and Rio Olympics, Russian athletes doped concerted by the doctors, and Ministry of Sports. We will collect data on doping from cases in the Court of Arbitration for Sport, Federal Supreme Court of Switzerland, ECHR, ECJ, and IOC decisions. We will use this data and the Markov chain to predict the probability in the next Olympics.