Dan Mullen did. All the best guys do. I remember a play KC ran with Hill in the slot in near the goal line. He went in motion slow then as he started back to the left he full on sprinted back to the right flat and the defender was beat. It was obviously man in that type situation and he got the matchup he wanted. A few weeks later Mullen did the same thing with Toney,,,,,td as well. Andy Reid has admitted to stealing a bunch from college Oc’s. The transformation of his offense the last fifteen years is crazy. You can’t even recognize it anymore .