oer

hello. I have a question about charting OER for my team. I just began using this stat Saturday and was wondering if an offensive rebound is considered a new possession? just want to make sure I'm getting the most accurate snapshot of our efficiency. thanks
We use a formula developed by Dean Oliver to calculate possessions. Possessions are field goal attempts + turnovers - offensive rebounds + .4 * free throw attempts. It, of course, is an approximation to actual possessions, but it should be pretty close.
I thought offense or defensive rebound doesn't matter, the possession is that sequence that leads to a FGA, FTA or turnover
The formula Dean Oliver uses is something he has determined to be a good approximation of possessions if you only have statistics to go by. If you can actually watch the game and observe the possessions then you can get an exact number.