Confused by changes to instant replay for 2017? Take a number.

There are plenty of new aspects to examine in what is likely the biggest change to the process in the three decades since instant replay hit the NFL in 1986-87. Tech plays a starring role in this production.

A closer look at the National Football League's plan for instant replay this season reveals details that show that the league and its football operation unit are well-prepared for the move away from under-the-hood systems to centralized decisions made at NFL headquarters.

Read More.