John Leslie Cornell Jr. (born June 4, 1989) is an American football guard who is currently with the Baltimore Ravens of the National Football League. He signed with the Baltimore Ravens as a Undrafted free agent. He played College football at Illinois. In high school, He was ranked the 12th prospect in the state of Illinois by Rivals.com and was nationally ranked as the 37th prospect at the offensive tackle position. He was a 2006 Max-Enfinger All-American while at Notre Dame High School. He participated in the 2007 Illinois Shrine Bowl.