Sports NFL draft prospect Zack Baun had a diluted drug-test sample at NFL scouting combine, per report April 15, 2020JR Radcliffe, Milwaukee Journal SentinelComments Off on NFL draft prospect Zack Baun had a diluted drug-test sample at NFL scouting combine, per report Although Wisconsin LB Zack Baun's diluted sample doesn't prove the presence of a banned substance, it typically constitutes a failed test.