The Worst Betrayals in NFL Historybr From shocking trades and contract holdouts to loyalty shattered by unexpected moves, the NFL has seen its share of jaw-dropping betrayals. This deep dive uncovers the most infamous moments when trust was broken—between players, teams, and fans alike. Whether it’s a franchise legend turning rival, a coach walking out, or a front office decision that left supporters stunned, these betrayals forever changed careers, legacies, and entire fanbases. Brace yourself for the darker side of football loyalty.