Doesn't he know what kind of tests he'll be subjected too and when? Seems like this fight he'd even have the money to buy undetectable PEDs, masking agents, advisors on the best way to take them, and lawyers/managers/agents to get him preferential treatment. Also, he's been popped before so now he's got experience on his side.
It's pretty damn clear that the current testing in boxing is at a very low standard. That boxers can cheat using EPO variants or use Xenon inhaling that's something we just need to accept because it's almost impossible to catch without a global year round bloodtesting in place. But actual rigid use of steroids and such, that's something wich shows that boxing is far and far behind other sports when it comes to testing. Berto would never pass real OST, that for sure. edit: I also read the WBC is going with VADA soon. That will shake up things for a bit...