Coaches always want better ways to teach defense. To me, the Mirror Defense Drill is the best drill because it trains lateral movement and reactivity. In the drill below, the strength coaches demonstrate lateral movement with a rear-foot push-off as opposed to the basketball-specific step-slide. For lateral quickness, this is the best movement pattern to teach. Many basketball coaches are stuck in the old dogma and are unwilling to accept a rear-foot push-off or a crossover step because they teach defense in slow motion and from a static position.