( If he did n't pass drug tests at the Combine , I did n't find a report of it . )
Roberson 's four other games missed in 2013 were attributed to injury but it 's believed there was a disguised suspension for failing multiple drug tests .
( If Roberson did n't pass drug tests at the Combine , I did n't find a report of it . )
Roberson 's four other games missed in 2013 were attributed to injury but it 's believed there was a disguised suspension for failing multiple drug tests .