The NFL has come a long way in the two and a half years since its initial social media rules for teams. The latest set, however, still keep the 15 minutes before kickoff and whistle-to-whistle highlights as no-stream zones. And new challenges are just around the corner.

Content owners were jolted when the entire match was streamed live using smartphone app Periscope. Source: HBO.com

The first set of rules was written after NFL executives recovered from an adrenaline jolt caused by the live streaming via smartphone app Periscope of the pay to view Mayweather-Pacquiao title fight on May 2, 2015. The league wanted to protect its live assets - and thus its revenue rivers - from pirates.

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