The case "does not involve prohibited drugs" BECAUSE THE ATHLETE WAS NOT AVAILABLE TO BE TESTED. It's a bit difficult, is it not, to determine what he might have been using if he ducked the tests? You really are as thick as a bunch of bricks. But since he avoided the tests and offered no legitimate excuse it is a fair conclusion that he did so because he didn't want to get caught doping. There's every possibility that he was using the "prohibited drugs" for which you and Tygart could find no evidence. It seems to have escaped you both that it is hard to detect what wasn't able to be tested for. That's what avoiding tests will do. Hence, the violation.