By Bess Shapiro
General Manager Reggie McKenzie has been criticized by analysts for focusing more on talent than on need, especially on defense. But bringing in the best player available has resulted in filling needs. All signs indicate that the Raiders are likely moving from a 4-3 to a 3-4 defense. Despite the unit's abysmal performance last season, defensive coordinator Jason Tarver survived the coaching purge and is being given a chance at redemption. All free agent acquisitions and draft picks indicate a move to a 3-4.