At the 14:10 mark, Bama runs a wildcat with the QB and TE showing jet sweep act.
Here is the line-up.
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It would see this is the intention.
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This is what happens.
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The right Guard does not take a good angle at the LB, who takes on the block with his
inside shoulder, defeats the block and slides outside behind the DE who is crashing (not respecting the jet sweep action at all) and the LB meets the running back just outside the crashing end, tackling him for no gain. That looks like a not great play design, plus expecting more of the right tackle than he can deliver or a coaching failure to urge him to the correct aim point on the LB.
If in this case, the defense is giving no respect to the QB jet sweep action, maybe you
do give the QB the ball, and he has a TE paralleling his movement to serve as a blocker for him to pick up some yardage.
Anyway, it seems to be a combination of not great play design, plus almost good enough blocking resulting in no gain.