A guy I know very high in the Yankee organization, I mean very high, told me that he suspected that Rivera was a PED user back in 96.
Interesting. A buddy and I were trying to decide which baseball star is the least likely to use PEDs. We agreed on Mariano Rivera. However, I also told my buddy that I'm so cynical on this issue now, that I wouldn't be surprised to find out that anyone in MLB was using PEDs.
As a life-long Yankee fan, I have to admit that the Yankees don't have a very good record policing PED use in their organization.