Who is the smallest offensive or defensive lineman in college or pro football?
On average, the defensive ends (DE) are the lightest linemen.
They need speed more than mass. That applies to both college and
the pros. You will get an occasional DE that weighs a lot more than
average. They are usually on 3-4 defensive schemes. These guys
don't really meet the definition of defensive end, as the outside
linebacker (OLB) performs their function (outside contain).