Tbh, I find it hard to believe that Diaz is on the gear.
And I ain't his #1 jock rider or anything like that, I just can't see it.
That said, the tainted supplements story is the fishiest shit ever, and always has been. Even more so when the accused just sends you a jar of some shit and is like - here you go, this is what I've been taking.
The easiest thing for me to believe in this scenario is that USADA's methods are far less reliable than they make out and there's some fuckery going on to bury this thing because they all know it's a balls up.
Regardless, any way you slice it, they look ridiculous right now.
The picogram fiasco left them with little credibility, and this just puts them beyond a joke.