Yesterday, I linked over to my graph and column regarding this season's big men prospects on offense. Grading defense at the college level is nearly impossible. But rebounding is assessable. So here's a graph showing the top big man prospects as well as top prospects from the past two years who made the NBA. The x axis show offensive rebounding (further to the right is better) and the y axis shows defensive rebounding (higher is better). This is not adjusted for the size or strength of the opponent, but by virtue of being rebound rate it is adjusted for pace.