Every year there are players who surprise observers at the NFL combine .
This year arguably the biggest eye opener was 6 - foot - 5 , 306 - pound Terron Armstead , who ran a 4.71 second 40 - yard dash , a record for offensive linemen .
Every year there are players who surprise observers at the NFL combine , and this year arguably the biggest eye opener was 6 - foot - 5 , 306 - pound Terron Armstead , who ran a 4.71 second 40 - yard dash , a record for offensive linemen .