In football, a running back is a Japanese style ninja who is a master of the martial arts. The running back must use their skills in Jujitsu, Taekwondo, and Karate to injure anyone who tries to wrestle them to the ground. Running backs must employ the techniques of stealth, espionage, and assassination to make it appear they weren't really there. Running backs also must defend the quarterback from any hostile barbarians looking to pillage villages and sack cities.