Archives for: May 2008, 09

05/09/08

Permalink 03:22:00 pm, Categories: Background, Statistics, Case Studies, Formulas  

Statistician's Digest: The Points Saved Concept
Pro Basketball Forecast

Points Saved is a new stat introduced by John Hollinger to measure individual defense and here is his description form his book Pro Basketball Forecast (Pro Basketball Prospectus):

"The idea is to take the minutes a player played in each game, multiply it by the team's points allowed in that game, and compare it to how many points the team actually gave up with the player on the court. From that, we determine his defensive value by the difference between "expected points" and the actual points -- something I call "points saved".

The formula is as follows:

Points Saved = ((MIN/tmMIN) * oppPTS) - oncourtoppPTS

where oppPTS is the opponents points scored in games in which the player played, and oncourtoppPTS is the opponents points scored while the player was on the court.

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