Offensive rating (available since the 1977-78 season in NBA); for players it is points produced per 100 posessions, while for teams it is points scored per 100 possessions. This rating was developed by Dean Oliver, author of Basketball on Paper. I will point you to Dean's book for complete details.
DRTG-
Quote:
Defensive rating (available since the 1977-78 season in NBA); for players and teams it is points allowed per 100 posessions. This rating was developed by Dean Oliver, author of Basketball on Paper. I will point you to Dean's book for complete details.
I've seen people confidently uses these stats (DRtg moreso than ORtg) to gauge a player's offensive/defensive performance, and as of right now I don't know much at all about them and was hoping someone could explain it to me. As you can probably already tell, I haven't read Dean Oliver's book.
To help illustrate where I'm confused, lets for example assume that somebody one day brought up the fact that Tyrus Thomas led the league in 2007 in DRtg with a rating of 92.8-->What exactly is "92.8" measuring, and how can it show Tyrus is a good-great defender?
Joined: 14 Jan 2005 Posts: 1527 Location: Delphi, Indiana
Posted: Tue May 29, 2007 6:42 am Post subject:
I think it means if Tyrus had 4 brothers, and they ranged in height from 6-1 to 6-11, and they all played a lot of basketball, and each played a position from PG to C, and they all ended up on an NBA team, they'd hold opponents to 7 PPG less than their normal scores. :-)
The results you get may vary. _________________ 40% of all statistics are wrong.
It might be useful to point out the difference between team and player RTG. The former is as simple as can be, since teams are self contained units. The latter is more difficult, since players interact and RTG attempts to capture some of this.
The scale of RTG is points per 100 possessions, which is, roughly, the number of possessions in a game. For a player's ORTG, this is not his actual points scored per 100 possessions, but his contributions to his team's points produced (in the numerator) and possessions (in the denominator). ORTG attempts to account for all the offensive elements a player can contribute: an offensive rebounder contribtues to his team's points produced by giving them extra shots, a passer will contribute by taking a portion of the credit for points produced, and scorers of course get credit for scoring. The utility of the system is that it attempts to weight these elements by their importance to the team -- so that an assist for a player on one team will not necessarily produce the same credit as an assist for a player on another team.
The DRTG, due to limitations of the data, is heavily team dependant, which is probably as it should be. I won't go through it since I don't understand it as well.
I urge you to pick up BoP for the derivation and further elucidation. _________________ ed
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