If the NFL operated like a high school cafeteria, seats at the most popular lunch table would be filled by executives in “Positional Value” letterman jackets.

Meanwhile, the outsiders — members of the Eagles, Ravens and Packers front offices — would be sneering in the corner about getting the last laugh.

Welcome to the Year of the Running Back’s Revenge.

The NFL’s three leading rushers all were free-agent additions whose new teams capitalized on a market deficiency while the rest of the league was occupied looking for playmaking receivers in a scrap heap.