Frankly, passing a piss test doesn't show anything one way or the other. Lance Armstrong passed more invasive tests than that for years, and he was a cyclist. Championship, HBO PPV boxers get paid millions of dollars, and can pay the right people to supply them with drugs that won't be detected by a piss test. While I still believe innocent until proven guilty, now I think unless a boxer takes random VADA tests, there is some doubt. The only boxer we know for certain that isn't on drugs is Nonito Donaire. Unfortunately, that's the state of affairs we're stuck with today.