Im no expert but ill take a shot. Petey always had very good tackles. The inside guys had grit and were sound. He was very detailed and big on gametime preparation; And he was a good recruiter. He was an outstanding coach that suited our needs by being good at evaluating, able to project a players future contribution and knowing who we could get.
He could also coach a group up for any style. Right now our run game is a cluster and I don't really know why, but it seems like we are not able to block anybody at the next level inside or seal an edge.