It always bugged me when at Michigan, Rich Rod would call his Lead Outside Zone play "Power". Football terminology is notoriously inconsistent from program-to-program, where the same word can mean very different things. But Power had established a sort of agreement and consistency, it is down blocks on the frontside with a backside puller, a true gap/man scheme. Yet here was Rich Rod calling Outside Zone "Power." It made my head hurt for a long time, until one day I was looking through the Joe Gibbs's playbook, and the rationale behind it struck me. As I noted in the History and Evolution Series , power itself was originally focused on the Power Sweep, as a sort of variant to the inside run and option series. As Option Teams (often Wing T types) moved more toward zone blocking in the 70s, Power had to be adapted in ways to fit what they did. Rarely did these teams pull within the formation, it was mostly zone blocking, occasional traps as a change up, and mayb