James Toney got poped for jucing, they talked about stripping his belt from him dunno if they ever did. My personal exp i know a shit load of MMA and boxers (most heavy weight+) that juice. They do random testin for UFC, and boxing..not sure about k1
basically there should be steroids in sports, in all of them from college to professional. Steroids help reach that other level.
at least thats my opinion.