Clemson is in a Nickel personnel on 2nd & 7.
The Rush:
Pressure side DE stems down to a 4i. The full line is slanting away from the pressure with the ILB and Safety pressuring off the edge. The ILB is first going up the field and wide, while the Safety is outside and going through the heel line of the up field ILB. The path gives the Safety a straight line run on the QB.
The Coverage:
2 Under 3 Deep
The usage of the stem down by the DL is a huge factor in allowing the overload of the RB.
If the defense has aligned the DE is a 4i initially the OL may have declared the protection accounting for the defense like a odd front spacing.
The Guards and Tackles could work a fan/fan concept with the Center on the Nose. This would allow the protection to pick up the pressure.
The strong side OG/OT would handled by the DE/DT. The Center would lock the Nose. The OG would set the pressure side 4i and travel back with him as he tries to cross face. The OT would pick up the first edge threat from the ILB while the RB would pick up the 2nd threat from the Safety. This would allow the QB time to hold the ball and give routes a chance to get open vs. the 2 under 3 deep. There is no doubt a 2 under 3 deep coverage wants the ball out fast to prevent the routes from finding the open space in the coverage concept.
The DE's alignment however wasn't initially in a 4i, he stems down to the 4i alignment.
The 5 technique DE gets the OL into a half slide protection. The OG is uncovered starting the slide putting the OT manned on the DE. The RB is responsible for the either the ILB or Safety blocking inside out. If both blitz the QB has to handle the 2nd free rusher with a hot throw. The RB wants to block the most inside threat.
When the DE stems down during the cadence it is too late for the OL to get into a fan/fan concept. The OT stays manned on the now 4i aligned DE. This functionally turns the protection into full slide with the whole OL setting away from the pressure. One tried and true pressure plan against full slide is to get 2 rushers off the edge vs. the RB. That is exactly what this concept creates. The bonus is the pressure path.
The ILB and Safety present spacing off the edge with the ILB first and inside and the Safety second and outside. The spacing appears to the RB that the ILB is the most inside threat. The RB aggressively commits to blocking the first threat. When the Safety goes through the heel line of the ILB it creates an efficient straight line run on the QB. The RB has difficult pick up against this look to ID the Safety as the most inside rusher. The RB is already committed to the ILB leaving the inside most rusher free.
The QB is forced to get the ball out fast with immediate pressure in his face. The QB is forced to throw at a pressed up X receiver before the route has time to develop. The QB also had no time to work back to the route combination to the strong side.
Nice pressure design from Brent Venables.