The corner three is generally considered the most-efficient shot in basketball (outside of dunks, layups, and free-throws). However, as a friend of mine pointed out, the corner three is often a product of good offense rather than a shot teams run sets for (I’m not saying teams don’t run sets to get a clean look at a corner three, just that many times corner threes come from natural drive and kick actions).

How many times have you seen LeBron/Durant penetrate into the lane and kick the ball out to an open shooter if/when the defense collapses?

By proxy, the number of corner threes a team gives up can measure its susceptibility to penetrate-and-kick actions. So one would think that teams that give up more corner three attempts tend to give up a lot of penetration on drives, or also are teams that over-help.

The five teams that give up the most corner three attempts are…