Rob Vollman of Hockey Prospectus has passed along his latest Player Usage chart for the Nashville Predators, which provides an individual breakdown of how Shots For & Against are flowing in an easy-to-read, visual format. There are 3 pieces of information which go into this chart: The bubble for each player is their Relative Corsi (the balance of Total Shots For & Against in 5-on-5 action while that player is on the ice, as compared to how the Preds do while that player is on the bench). Blue is positive, Pink is negative, and the size of the bubble reflects the size of the number (small & blue is OK, big & pink is awful, big & blue is great). The vertical location reflects the Quality of that player's Competition (the higher up, the tougher the opponents that player is facing during his ice time). The horizontal location shows the balance of offensive- vs. defensive-zone faceoffs a player was on the ice for, a reflection of whether they're being placed by the coaches in offensive or defensive situations. This is expressed as a percentage, so 50 means a 50/50 split between offensive and defensive zone draws.