The receiving team had nine or 10 players lined up between its own 35 and 30 in the “setup zone” with the other one or two players back deep to receive the kick. And no one but the kicker or return ...

And no one but the kicker or return men could move until the returner either touched the ball, or it hit the ground. In its first year, the dynamic kickoff still yielded 1,802 touchbacks ...