Iowa quarterback Ricky Stanzi was taken to the locker room after being hit in the end zone in the second quarter of the No. 8 Hawkeyes' game against Northwestern.
Stanzi was drilled by Corey Wootton, and his fumble was recovered by Marshall Thomas for a touchdown that brought Northwestern within 10-7.
Stanzi was limping as he was helped off the field. He was replaced by redshirt freshman James Vandenberg, whose first pass was intercepted.