The stuff that's getting onto the banned substances list is making it harder and harder for athletes to keep up. I totally buy his explanation that he didn't know he was taking a banned substance. Hell, it may have been legal to take until December for all we know.
The same thing happened to Sharapova earlier this week. A medication she had been taking without issue for 10 years was added to the banned drugs list in January and she didn't read the update. As a pro athlete you need to be on top of that kind of stuff but it also shows how finicky these lists are becoming.
I don't know the process within organizations but they should have a person on staff who's sole job it is to look at the lists of supplements and medications players are taking and be checking every single ingredient against the banned substances list. This isn't MLB in the 90's and early 2000's. Not a lot of athletes are risking their careers to knowingly used banned substances in-season (out of season training is another story). Most of the suspensions we will see in all sports from now on will be athletes getting caught taking something they had no idea was on the banned substances list.
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