Most of this reads exactly like propaganda for the league AND the players, especially the textbook plausible deniability defense of blaming a trainer's negligence. Like these insane, very wealthy gym rats are just taking whatever they're "given" by well paid trainers without understanding potential risk/exposure. There would be litigation galore, wouldn't there? Prior to an initial positive result, players can push the envelope with respect to offseason regimens and testing schedules, no? Sometimes they push it too far and run into bad luck with respect to testing dates. But I don't think many of them unknowingly take "supplements" tainted enough to result in 6-game suspensions. Or if they did, then we'd hear more about that.