American Football Rules IFAF Approved Ruling 7-3-8:III and X
III. A83, a wide receiver 10 yards from the nearest interior lineman, slants toward the middle of the field. Before the ball is thrown, B1, a back, legally blocks him and knocks him down. RULING: Legal unless the block was below the waist (Rule 9-1-6). [Cited by 7-3-8-c-3, 7-3-8-c]
X. Before the pass is thrown, wide receiver A88 and defender B1 are running shoulder to shoulder and side by side 15 yards beyond the neutral zone. A88 is nearest to the sideline, and B1 is nearest to the hash mark. A88 breaks to the inside. B1 does not move, and A88 collides with him. RULING: No foul because the ball has not been thrown. [Cited by 7-3-8-b, 7-3-8-c-3]