Peters was hammered by Wisky player and has to leave. he had what looked like a very short check up and missed only one play. i have seen this a couple times with UM since Harbaugh has been there. it was my understanding that there was a fairly thorough check up that needed to occur usually under the tent. not following the correct protocol with Shane Morris was one of the reasons that Brady Hoke was fired. does Harbaugh have different criteria of handling players with potential for concussion?