Not OL play, but some day 1 install type stuff in the PAP/Pass game.
Nebraska calls it Saints, some people call lit Y-cross. They describe it as a Hi/Lo Sweeps.
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So one example here of the basic concept. Doesn't matter the combination of the routes being run, it's the same picture for the QB if they get to the right spots as in the figure below. Some Dan Gonzalez stuff that I'm a big fan of.
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Anyways, saw a clip of practice and this would be the backside part of the concept. #2 receiver is running the Y-Cross. The backside #1 is working the high portion, which can be a number of things including a skinny post as in the diagram or converting it to a post/corner. They ran this combo a shit ton when AM was a freshman and was really good to them, not so much last year. If you've got a backside #1, it's one of the best concepts in football. Really similar to 4 verts, which is how we basically treat it.