Wrong, wrong, and wrong. But good use of the big word "intellectual". Hahaha
Several people have shown that the evidence was conclusive; your babbling about the WADA Code and the TDxyz has nothing to do with that. As expected, you failed to provide any actual argument to the contrary.
Here a definition for you (even for "clear and convincing evidence"):
“Clear and convincing evidence” is a medium level burden of proof which must be met for certain convictions/judgments. This standard is a more rigorous to meet than preponderance of the evidence standard, but less rigorous standard to meet than proving evidence beyond a reasonable doubt. The clear and convincing evidence standard is employed in both civil and criminal trials.
According to the Supreme Court in Colorado v. New Mexico, 467 U.S. 310 (1984), "clear and convincing” means that the evidence is highly and substantially more likely to be true than untrue. In other words, the fact finder must be convinced that the contention is highly probable.
"highly and substantially more likely to be true than untrue"
"In other words, the fact finder must be convinced that the contention is highly probable."
Get it? Doesn't even have to be beyond reasonable doubt (which it clearly was here though (although not required)).
Yes I know, the WADA Code only requires "preponderance" - meaning the fact alone, that the pig meat (IF she had pig which wasn't proven) more likely than not did not come from an uncastrated boar, was enough for the guilty verdict, but there was so much more additional evidence in this particular case - see the several following sub-decisions in the CAS report that made it at minimum "highly and substantially more likely to be true than untrue" that the drug did not come from the burrito. Even Tygart admitted that!
As there were no other more likely "innocent" (unintentional use) alternatives than that, as even Shelby admitted, it is concluded that she doped intentionally.
Knighton (won at first instance, appeal still to be decided) and Lawson (lost at the first instance, won the appeal) are more interesting examples imho. There, the evidence was not conclusive, but may (might have been/was) enough for a conviction at one level or the other.
Houlihan of course lost everywhere, literally. Thank God she didn't get away because of a technicality.