I had always assumed, from their builds and demeanor and sudden improvements, that most of Usain Bolt's competitors were juicing. But I had held out hope -- based on his build and demeanor and abnormal talent from a young age -- that Bolt himself was clean.

But then Guy Davis forwarded this article from Muscle Week, which makes the case for Usain Bolt being a doper. If Bolt in fact did hire Heredia -- which some of the commenters dispute -- that's pretty damning evidence.

Guess I should dial down my enthusiasm for Bolt a notch.