Mack (6-foot-3, 251 pounds) said that while he could fit in a 4-3 scheme, especially as a pass-rushing end on third down, he thinks the 3-4 "is designed in my favor" because of his ability to rush the passer but also drop into coverage.
"I feel like a 3-4 outside linebacker," he said.
Mack spent part of his segment detailing his fairy-tale rise from unrecruited high school player -- he wasn't an under-the-radar recruit as much as an off-the-radar recruit -- to possibly going first overall in the draft.
Mack signed with Buffalo in 2009 as part of then-coach Turner Gill's fourth recruiting class at the school. Mack played only one year of high school football and had been planning to attend FCS member Liberty until the Flames assistant who recruited him was hired by Buffalo. Mack was listed at 6-3 and 220 pounds when he signed with the Bulls out of Fort Pierce (Fla.) Westwood, where he had been a third-team all-state pick in Class 4A (at the time, Florida's third-largest high school classification). Among the 4A first-team picks: Baltimore Ravens safety Matt Elam, a first-round pick out of Florida in the 2013 draft, and Georgia quarterback Aaron Murray (who might end up playing in the same division as Elam).
Mack went on to set an NCAA record with 16 forced fumbles and is tied for first in NCAA history with 75 tackles for loss.