Watch: Randy Gregory knocked the head off the Sports Science dummy

This should be interesting when it airs….

So, @RandyGregory_4 knocked the #SportsScience tackling dummy's head off. Never been done before. pic.twitter.com/1EdjiqPoUw

— Rand Getlin (@RandGetlin) March 5, 2015

.@nfl Draft prospect Randy Gregory delivered suck a hard hit that he knocked the head off of the tackling dummy. http://t.co/wOv2YyCguO

— ESPN Highlights (@HighlightsESPN) March 6, 2015