"There are three comprehensive defensive metrics floating in the public forum: opponent PER, which tells us the player efficiency rating (PER) of a player's counterpart in the opposing lineup (you can find it on 82games); defensive plus-minus, which tells us how many points the team defense improved by with a player on the court (you can find it on basketballvalue.com; and Synergy Sports' defensive efficiency rating, which uses countless hours of video tracking to a.ssess a player's defensive acumen (subscription required). I've created a composite rating that combines the three metrics and scales it to a 0-100 rating where fifty is average.
Here are the grades:
So, by this metric (which by no means should be the sole judge of defense), Kobe places third among this trio. Allen rates far better than these Wade and Bryant, but this metric does not consider playing time. (For what it's worth, Ronnie Brewer graded out as the top shooting guard defender). "