Revert to 2-hand touch between shoulders and knees. Illegal use of ball carriers hand or arm to protect flag from being pulled. 10 yds from spot and loss of down. On regular scrimmage downs, guards must be covered by eligible ends. The Free-Blocking Zone is a rectangular area extending laterally 4 yds on either side of the spot of the snap of the ball and 3 yds behind each scrimmage line.
All fumbles are dead at the spot.
If a ball is fumbled in mid-air, the defender may recover the ball before it touches the ground. Hurdling a down player is legal. At the time of the inadvertent whistle the team with possession of the ball has the option of replaying the down or the result of the play. Illegal to avoid a sack. Legal to stop the clock.