More information: Division I college games feature eight officials, whereas the NFL uses only seven.
Answer: Mike Ditka
More information: Ditka won as a player with the Cowboys in 1971, assistant coach with the same club in 1972 and head coach of the Chicago Bears in 1985.
Answer: Rodney Peete
More information: Holly Robinson-Peete is best known for her roles on "21 Jump Street" and "Hangin' with Mr. Cooper". She married 16-year quarterback Rodney Peete in 1995.
More information: The area behind the line of scrimmage, which usually consists of the quarterback and running backs, is called the backfield.
More information: The foamy NERF football, a favorite amongst children, was created in 1972 by former Minnesota Vikings' kicker Fred Cox, who still receives quarterly checks from the company due to this invention.
More information: Julian suffered an anterior cruciate ligament or ACL injury, which affects a region behind the thigh.
Answer: Marshawn Lynch
More information: Running back Marshawn Lynch is known as "Beast Mode" due to his ability to overpower defenders.
More information: Paul Hubbard (1871-1946) suffered from deafness. He created the huddle so that he can hear teammates better and hide plays from the defending squad.
Answer: Emmitt Smith
More information: Peerless retired running back Emmitt Smith, alongside professional dancer Cheryl Burke, won season three of "Dancing with the Stars".