And then his teammate also tested positive a little later and was also suspended for 80 games, and you think there is no connection there except "guilt by association". While there is no proof out there yet of which I am aware, it doesn't take an MIT grad to connect the dots that are likely there.

Also, guys test negative all the time, even when they are using. There are ways to do that. Otherwise, every guy who juices would be caught every time.