Originally Posted by redsmetz
So someone explain to me how these keep coming up. I understand one possibility is someone just thinks they might be able to mask things enough to not get caught, so that's one possibility. Other than that, what else can this be?
I'd guess most users stay ahead of the curve with masking or simply because testing is not frequent and mainly urine-based. They probably get away with it most of the time and only get caught when they are unlucky with timing or the masking agent doesn't work correctly.
Grandal made it through the minors without getting caught.
Armstrong was never officially "caught", but there is little doubt today that he juiced to the max. And testing in cycling has always been far ahead of baseball's program.