They've been having OL issues all year. the RG is weak, and the LG is most likely moving out to LT which most likely weak LG. and while the LG that's moving to LT is a stud, that's a different position and i'm interested to see Abdul and potentially DDS with their speed rush go against a dude used to playing guard.
And if the OL can't hold up, you have 2.3 yards per carry, and not enough time for the QB to wait for the WRs to get open.
If PSU is smart, they pressure all game and play man under cover 2 (not press) on the outside WRs to let the pressure get home, and force them to run the ball (risky, because they have the RBs to light us up, but the OL hasnt' helped the run game)
If tOSU is smart, they go to the quick passing game that gave us fits against Bowling Green. Imagine trying to not let Smith get inside with his 6'3" 220lb self