Rule 9, Section 3, Article 6

A player shall not chop block or clip.

Rule 9, Section 4, Article 5

Running into or roughing the kicker or holder. A defensive player shall neither run into the kicker nor holder, which is contact that displace the kicker or holder without roughing; nor block, tackle or charge into the kicker of a scrimmage kick, or the place-kick holder, other than when:

a. Contact is unavoidable because it is not reasonably certain that a kick will be made.

b. The defense touches the kick near the kicker and contact is unavoidable.

c. Contact is slight and is partially caused by movement of the kicker.

d. Contact is caused by R being blocked into the kicker or holder by K.

Rule 9, Section 7, Article 2

No player shall bat a loose ball other than a pass or fumble in flight, or a low scrimmage kick in flight which he is attempting to block in or behind the expanded neutral zone.

EXCEPTION: A K player may bat toward his own goal line a grounded scrimmage kick which is beyond the neutral zone and may also bat toward his own goal line a scrimmage kick in flight beyond the neutral zone, if no R player is in position to catch the ball.