The time is 2013. Notre Dame at Michigan. Biggest game of the year. Third and three. A short distance conversion, so the Fighting Irish go on with 12 personnel, stacking the tight ends to the left side. Everybody's expecting a run, but the Wolverines go with four down linemen. So the quarterback takes the snap and swivels it out left to the running back, who takes two steps- no, three steps before his legs are grabbed and tripped by #57. Literally two seconds off the ball and BAM! he's dropped. How often does a running play get stopped short on a third and three?