North Alabama CB Janoris Jenkins may be the biggest risk-reward proposition of the 2012 draft. His skill and coverage ability are unquestioned, but his off-field issues are a major red flag. The latest mock drafts of CBSSports.com’s Pete Prisco and Will Brinson have the Lions choosing Jenkins’ potential rewards over his risks, and drafting him with in the first round. Prisco and Brinson’s drafts were released before full details emerged about the marijuana possession incidents involving Lions DT Nick Fairley and RB Mikel Leshoure. Detroit has had three members of its 2011 draft class involved in drug-related issues, making the decision to draft Jenkins -- and his past -- a difficult choice.