A Linebacker (LB) is a position in American an Canadian football that was invented by football coach Fielding Yost of the University of Michigan and first played by Germany Schulz. Linebackers are members of the defensive team, and line up approximately three to four yards (4 m) behind the line of scrimmage, behind the defensive linemen. Linebackers generally align themselves before the ball is snapped by standing upright in a "two point stance" (as opposed to the defensive linemen, who put one or two hands on the ground for a "three point stance" or "four point stance" before the ball is snapped).