http://www.crezbasketball.com

CREZ offers a free scoring system that lets you score games or just enter box scores.

You can then calculate ratings per player and per team, by single game or by multiple games.

Enjoy!
David

For example, the block rate for a dominant center could be suppressed if they’ve earned the reputation as a brutal shot blocker*. When Mutumbo was in his prime, you were very wary about driving into the lane. As a result, he has fewer block opportunities out of the total number of shots (Dikembe’s presence keeps them at the perimeter). So perhaps, one day block rate could include only shots that the player is within 5 feet of. This is extraordinarily labor intensive and could probably only be done with the resources of a pro team, but something to consider in the future.

* Like the Deion Sanders/Nnamdi Asomugha effect.

This is a sound step you’ve taken in an attempt to better understand the game.

Now …

What you need to do next is:

1. Start using the correct definition for what a “real” possession entails, in the game of basketball, rather than what the stat heads have settled on, to this point, which is commonly refered to as “the number of ‘plays’” a team has in a game; and, then,

2. Stop trying to bring all numeric values to a similar baseline measure for each game and player.

Understanding basketball correctly is about analyzing each and every possession, based on the available play-by-play data which is keep by the assistant coaches in the NBA when they break down film/tape, based upon the individual match-ups in- play at a given point in a game.

It is not about the average number of points scored per 100 possessions … as currently defined by stat heads … for a team … and one example … and how that “number” compares, in terms of a supposed “efficiency rating” [etc.] … over the course of a season [or seasons] against the other 29 teams [and their respective players] in the NBA.

http://sonicscentral.com/apbrmetrics/viewtopic.php?t=2401