The extreme difficulty of navigating a 17-game NFL schedule without a loss underpins the 95% implied probability against an undefeated regular season. League parity, frequent injuries, and grueling travel create multiple opportunities for upsets, as evidenced by Week 1 results where contenders like the Rams fell to the 49ers while others such as the Bills and Ravens secured narrow or hard-fought victories. Top teams face stacked schedules with divisional rematches, back-to-back road games, and potential rest or injury management later in the year. Historical precedent reinforces this view, with just two teams achieving perfection in the Super Bowl era and none sustaining it through the expanded format. Trader consensus reflects these structural barriers rather than any single roster's current form.