The NCAA site says that athletes are screened at all championship and bowl events by the NCAA itself - there is large leeway on whom they may choose to test.
It is amazing that a team would have such a high "hit rate" of + drug tests in such a short amount of time when tested by an outside institution
Link: https://nypost.com/2017/01/08/deon-cains-clemson-nightmare-has-become-a-second-chance/
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