What he needs to work on: It is easy to see the Raiders' plan for Mack as a defensive end. Defensive coordinator Ken Norton Jr. unleashed his star player in a variety of fronts, allowing him to collapse the pocket from both sides and work against the Cardinals' overwhelmed edge blockers, particularly Bradley Sowell. While Mack's power maneuvers completely disrupted the flow and timing of Arizona's offense, he must develop a refined game that enhances his chances of winning against elite left tackles in the regular season. Remember, the Cardinals' offensive line surrendered six sacks in Week 2 of the preseason, including a pair to Melvin Ingram on an assortment of speed rushes, so it is important to keep Mack's scintillating performance in perspective. If he can continue to tweak his game to add a speed or finesse rush to the mix, Mack can register more takedowns than pressures going forward.