I think they should make it a rule in boxing, if a boxer is caught cheating (loaded gloves, being on PEDs) then their previous 5 wins (or 10) should be changed to a loss because of the suspicion that they could have done it before. They should also have a lifetime suspension but, as we know, that doesn't always happens. They should make it riskier for them to cheat.

After Margarito was caught cheating, he got to have a high paying fight. What is now discouraging the other boxers from doing what he did?