The Bulls' Ben Wallace is the reigning NBA Defensive Player of the Year, due to his heavy presence in the middle of the lane. But who are the NBA's top lockdown defenders, the guys who can shut down a high-scoring swingman or create havoc along the perimeter? The 6-7 Artest is certainly as good as they come, using his thick frame, tremendous balance and just enough looniness to keep opponents on edge. He's the only non-center to win Defensive Player of the Year honors (2004) since Gary Payton in '95-'96.
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