Two players in Motion

[mbyron]

Rich is right: the quoted case plays all involve at least one player coming set while others are in motion. When multiple players are in motion and one comes set, that makes the motion a shift. If they do not all come set prior to the snap, the shift is illegal.

In the play bigjohn posted, all we have is 2 players moving at the snap. That's illegal motion, since neither came set prior to the snap.