Just how modern is the offense your NBA team runs?

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The way the NBA plays offense is evolving. Because of the lingering effects of the league cracking down on perimeter contact more than a decade ago, the rising influence of analytics and the desire to imitate successful teams, coaches throughout the league have been rethinking the way their teams try to score.

For this year's NBA Preview, ESPN the Magazine asked me to quantify the progressiveness of each team's offense. Here's a look at the four key factors we identified, their importance to offensive success and a look at which teams are playing the most modern style.

No. 1: 3-point percentage