I read on Iowas post game interview witht he O-line that Dace Richardson (iowa o-lineman) said that marshall Yanda (the guy who nailed parker on the block) was actually upset about his block. He thought he killed the guy. It shook him up pretty bad. Also Richardson said that during film review of the "block" that the consensus of the Iowa players was that they actually felt bad for the guy commenting that he was a frosh. They were pretty happy that he got up and walked off the field and more happy that he is not hurt.