Once B touches the pass behind the LOS all bets are off for IR, IG, OPI, etc. Big ole' Bubba (OL) can grab 'er and waddle for a TD.As I understand it, the differences from NCAA are no need for any eligible receiver to be in town and the free blocking zone is used in lieu of the tackle box to accommodate 6, 8 & 9-man that have a more narrow FBZ.