The running back market collapse is a market failure, not a talent evaluation
Running back pay has cratered over the last decade, and the standard explanation is that teams finally figured out the position doesn't matter as much as everyone thought. I don't buy it. What actually happened is teams figured out how to exploit a specific market inefficiency: running backs get hurt more than other positions and their production translates well from cheap rookie contracts, so why pay market rate for a 27-year-old when a 22-year-old on a rookie deal can do close to the same job. That's not the same as the position not mattering. A great running back still wins games. It's that the league found a loophole where you can keep replacing them for a fraction of the cost instead of paying for proven production, and once a few teams started doing it, the whole market repriced downward fast. Compare it to any other position where age-27 production still gets paid at market rate, and the running back discount looks less like a talent reassessment and more like collective bargaining leverage that the players' side never had. The players caught in the middle of this shift got hit hardest. Guys who were legitimately great got paid like replaceable parts because the market moved under them mid-career. That's a market failure dressed up as an analytics insight. [Yahoo Sports' breakdown of the collapse](https://sports.yahoo.com/article/depreciating-value-nfl-running-back-171947397.html) has the numbers on how fast the devaluation actually happened.