It is difficult to try and isolate the problem.
Here's a good example. 2nd and 2. Furman runs a little play action naked boot.
Watch Mercer's MLB - the kid that makes the play - he starts running to his right before Sisson even completes the fake and plants him in the backfield.
Thoughts:
1. The MLB apparently KNOWS what play is coming. Run based personnel on a short yardage down and he doesn't hesitate to attack the backside of the formation on the boot pass. He isn't blitzing. There's no reason for the MLB to be moving opposite of the action on that play unless something is telling him we aren't running.
2. Our offense is too predictable. As an underdog, do Mercer's coaches just take a gamble that Furman is passing in that situation or there something obvious that signals what we are doing on a given play? Again, this isn't a stunt. The MLB does not hesitate once Sisson begins the fake.
3. Are teams just not afraid of our running game? This seems also reasonable. Is our offensive line struggling to get a push such that a defense doesn't have to send its linebackers?
I'm sure there are execution problems (none obvious to me), but there's not much Sisson can do here. Blocking a backside blitz does not appear to be contemplated in the play design. The only area where we have no blocking is outside the TE on the backside, which is exactly where Mercer brings pressure.
This is where I think the coaches have to figure something out. Mercer appears to KNOW what play Furman is running here - from the linebackers back to the safeties (who sit in the zone waiting on Furman to run crossing routes - about the only pass we can routinely complete).