Caveat: Single-game +/- figures are so “noisy” (i.e., influenced by randomness) that they’re rendered practically useless. Even with a complete season’s worth of data, the +/- metric (especially in this– its unadjusted– form) suffers from this noisiness. Still, when taken in conjunction with the defensive box score, traditional box score, and old-fashioned “eye test,” the single-game +/- can be a part of the total evaluation process. It also serves as a good summary of Roy Williams’s substitution patterns/rotation.
Some definitions:
Pts-Pts All.: the points scored and points allowed by the team during a given player’s minutes
Off Eff: the points scored per 100 possessions with a given player on the court
Def Eff: the points allowed per 100 possessions with a given player on the court
Net Eff: the scoring margin per 100 possessions with a given player on the court
Since I’m dumping three games worth of data, I won’t provide many thoughts/explanations/trends/nuggets in this post. I’ve been posting a bunch of +/- and defensive charting tidbits on Twitter @FreeportKid, so definitely check that out if you’re interested in this kind of stuff. Once the schedule slows down a little (four games in one week is pretty intense), I’ll post a summary article discussing some +/- and defensive charting trends, analyses, and insights (especially some defensive stuff that relates to the UNLV loss, and some thoughts regarding Strickland/Bullock/Hairston and the allocation of minutes in the Carolina backcourt). Sorry this is essentially a pure data dump; I promise some analysis later (to provide some context and meaning to this sea of numbers).