Many russian athletes have been caught for PEDs lately. A lot of Russian athletes were banned from Rio Olympics because of a Russian government ran doping program. Yes, a doping program, not anti-doping program. So it might not be a big surprise that USADA caught a Russian fighter for illegal substances.

Heavyweight prospect Ruslan Magomedov is the latest UFC fighter to fall under the sword of the USADA.

Source: UFC heavyweight Ruslan Magomedov flagged by USADA for potential anti-doping violation – MMA Fighting