It is a split second before contact is made on the block. He is into his hip on the next frame, I just didn't hit the screen grab quite right. Stanley is still in the process of the handoff. If IKM is already outside the tackle box, then we should have been flagged for an illegal handoff as well. In the NCAA, the tackle box is defined as 5 yards to either side of the ball snapper and extends backward to the back of the endzone. The tackle box thing for this rule is really meant to avoid cut blocks on guys running out on passes to the flat or on option pitches, etc. Not for straight hand offs in the back field.