The tight clustering of implied probabilities in the AFC West title race stems from broad offseason improvements across all four teams following Denver’s 2025 division-clinching 14-3 campaign that ended Kansas City’s long reign. The Broncos retain the narrowest edge thanks to continuity under Sean Payton and a still-dominant defense, while the Chiefs benefit from Patrick Mahomes’ expected return and targeted additions to the running game and secondary after their 6-11 finish. The Chargers remain within striking distance behind Justin Herbert’s health and Jim Harbaugh’s program-building, and the Raiders close the gap with their top overall draft selection of quarterback Fernando Mendoza plus other reinforcements. Entering OTAs, roster upgrades and schedule parity keep the four-way contest wide open.