Per his Kansas coach:
Beaty: The issue for a lot of teams was his combine performance and pro day performance. Well, Dorance has never weighed 260 pounds since he’s been here. He came in very, very heavy. I’m not sure who exactly he was training with, but my way of dealing with him would not be carrying that kind of weight. The guy we know, one of his biggest attributes is his speed and quickness. I can assure you they got a steal out of him because had he ran what I thought he was going to run and been at the right weight, he wouldn’t have been around fourth round. No way.
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Dorance is a lot faster than what people think. Dorance never ran even remotely close to the (4.87) times he ran for the scouts. He’s been a high 4.5 to mid 4.6 guy every day when he was at the right weight: I think what they’re going to see is one of the most explosive guys develop in the NFL when it comes to getting off that edge. They found them a pass rusher. They got them a guy, no doubt.