Career
He gained 588 rushing yards as a freshman, 865 yards as a sophomore, and 1,031 yards as a junior. During the 2011 season, Clark totaled 1,110 rushing yards on 163 carries for an average of 6.8 yards per carry. Clark was the second leading rusher in Air Force Academy history.
He was removed from the Air Force Academy in May 2012, less than one week before he was due to graduate.