Their DB depth looks absolutely atrocious, and Michigan fans know what happens when you only have 4 scholarship CBs on your roster, and only 7 total scholarship DBs. It's goodnight Irene if even one guy gets injured.
They only have 7 scholarship LBs left, which means they've basically got 1 backup per position, so again, any injuries and it's time to que the fat lady.
Their running back situation appears to be a pu-pu platter, as a walk on is presently in competition for the starting job.
The top 4 receivers on their depth chart combined for 13 catches, 207 yards, and 0 touchdowns last year.
Their top 2 TEs did not catch a single pass last year.
In short, their offense consists of a walk on QB in his 3rd year starting after two very walk on like seasons, and no skill players with any valauble experience what so ever. Penn State's defense should be solid, but it's paper thin. A couple of injuries would completely decimate them, and turn them into a carbon copy of Michigan's defense circa the last few years.