Had a 64.7 grade from Gil Brandt. That's definitely a draftable grade.
Strengths: Lacy is not afraid to mix it up on the outside both in press coverage or when ripping off receiver blocks to grab running backs. His extreme foot quickness and sub-4.4 straight-line speed make him able to stay with receivers off the line as well as close on the ball when playing off. And, of course, the former receiver has the hands to make the interception in a fairly large catch radius (and area in which he can deflect passes from receivers’ hands) for his size.
Weaknesses: His lack of height and overall bulk are the major detriments to his draft grade, and might keep him inside at the next level. Larger receivers can stiff-arm him after the catch and better pro receivers will effectively use their superior height and length downfield to keep him out of their catch radius.
NFL Comparison: Joselio Hanson
Bottom Line: This diminutive corner might struggle against bigger NFL receivers, keeping scouts from giving him early-round grades, but Lacy could be a potential starter in the slot at the next level because he will mix it up in run support and in coverage (two interceptions, 10 pass break-ups in 2011).
NFL.com had Lacy listed as the 4th best undrafted DB. LINK