This is the first good player to get caught by the new testing. Previously Alex Sanchez was the only one I'd ever even heard of (not counting Herrera), and he's nothing more than a bench player. So superficially, it looks like the program's somewhat effective, I still have my doubts.
So far, major league baseball has caught a speedy outfielder, a power reliever, and a bunch of minor leaguers. Not a single major league slugger or established star. I wouldn't put it past MLB to selectively release information to the media, like the original steroid deal (pre-Congress) allowed for. Then again, maybe it's just too early to judge anything. So we'll see.