But because they 're so bunched together they have only a limited amount of flexibility .
From the Notre Dame box formation the four players in the backfield ( behind the line of scrimmage ) can take turns trying to move the ball forward .
Because they 're so bunched together they have only a limited amount of flexibility .
From the Notre Dame box formation the four players in the backfield ( behind the line of scrimmage ) can take turns trying to move the ball forward .