There is a specific kind of fantasy mistake that happens every September, and it always looks the same. A running back wins a championship, signs somewhere new for real money, and the draft room prices him on the highlight reel instead of the depth chart. This year that player is Kenneth Walker III, and the gap between what he costs and what he is likely to get is the widest on the board.
Start with the part nobody disputes. Walker was the Super Bowl MVP, he graded out as the most effective back in football last season, and Kansas City paid him three years and roughly forty-three million dollars to come be the centerpiece of their run game. That is a genuine résumé. It is also entirely about the past, and fantasy football is not scored on the past.
Here is the part that should worry you. Andy Reid has been a head coach for twenty-seven seasons. In that time he has produced a 1,000-yard rusher exactly nine times, which is thirty-three percent. The other eighteen seasons were some combination of committee work and inefficiency. This is not a coach who has occasionally drifted into splitting carries; it is a coach whose entire career is built on refusing to feed one back. He did it with Brian Westbrook and Correll Buckhalter in Philadelphia, with Jamaal Charles and Charcandrick West and Spencer Ware in 2015, and with a four-man rotation in 2019.
And then there is the genuinely strange wrinkle. In the nine seasons where Reid had a 1,000-yard rusher, his teams won about fifty-two percent of their games. In the eighteen seasons without one, they won about sixty-seven percent. Reid's best teams have historically been the ones that did not need a workhorse, because the passing game made the running game optional. With Patrick Mahomes back under center, that is the version of this offense you should expect. The bell cow role you are drafting does not exist in the coach's history and would arguably be evidence that something has gone wrong.
None of this means Walker is a bad player or that you should drop him. It means the price is wrong. He opens Monday night against a Denver defense that surrendered the fewest fantasy points to running backs in football last season at 16.1 per game, and he does it in a system that has spent a quarter century declining to give anyone twenty-five touches. Treat him as a high-end flex who will have three or four enormous weeks and a lot of frustrating ones, and you will be pricing him honestly. Treat him as the RB1 the trophy suggests and you are betting against twenty-seven years of evidence.