Player Production Average (PPA) is an overall rating metric developed by our very own Kevin Broom that credits players for things they do that help a team win and debits them for things that hurt the cause. PPA is pace neutral, accounts for defense, and includes a “degree of difficulty” factor based on the level of competition a player faces while on the floor.
In PPA, average is 100, higher is better, and replacement level is 45. You can find more on the metric here.