I'm sure I've plugged this film before but if you have not seen it check it out
The fact is if you are watching pros, you are watching people who use one sort of substance or another. Maybe its banned, maybe its not. The sports are better for it, and we cheer them on for a better quality of game.
The various leagues (NFL, MLB, PGA and so forth) should just legalize it and let them juice. Nothing is worse than seeing a meathead sports fan play the fool so they can gush for their man crushes. I mean, a tacit agreement is fine, but making excuses in this context stinks of such desperation.
P.S. Sherman's test was not flawed. It showed the urine in the cup was positive. It was the Chain of Custody that was the issue.