presents 'Prospect Primer,' a video look at an assortment of draft-eligible players who attended the scouting combine in Indianapolis. Buchanan started 32 games over three seasons, but saw his sack total drop from 7.5 in 2011 to just 4.5 in 2012. Started his career at safety and became a second-team all-Big Ten pick at defensive end the past two seasons. Will likely be converted to outside linebacker in the NFL.