A couple of my favorite basketball bloggers are big proponents of conference efficiency margin (what I normally call net efficiency).Basketball Prospectus author John Gasaway, who may have pioneered this stat, offered a pithy explanation of it's utility last month:Why track per-possession performance in league play?Over the next eight to nine weeks these 126 teams will play over a thousand possessions each. Half of those possessions will take place at home, and half of them will occur on the road. All of that basketball will be played against opponents that by conference affiliationhave been designated as nominal equals in terms of programmatic resources. (Though, granted, a league like the A-10 certainly exhibits some notable diversity in terms of member heft.) And, not least, all of...

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