Chop Blocks

[ABoselli]

So the official you spoke with got it backwards - if he waits, then it IS a foul. If it is a simultaneous high/low, there is no foul. The thinking, as I understand it, is a DL is far more vulnerable once he is already engaged with an OL, planting and using his leverage to advance. A hit at the knees at that point can cause more damage than one that happens on the initial "firing out" stage of the play.