Penn State senior linebacker Michael Mauti sustained an injury to his left knee in the first quarter of Saturday's game against Indiana and was carted off the field.
Mauti, a senior who had surgery last season for a torn anterior cruciate ligament in the same knee, was injured when he was blocked by Indiana running back D'Angelo Roberts.
Mauti was on the ground in pain before being carted off.
Mauti leads the team with 93 tackles. He is ranked as the nation's No. 3 inside linebacker by NFLDraftScout.com