Last Man Standing: Which 3-0 Team Will Be The NFL's Last Undefeated?

Through three weeks of the 2026 NFL season, five teams remain undefeated at 3-0: the Chiefs, Raiders, Bills, Vikings, and 49ers. At least one of those teams will lose their perfect record in Week 4, as the Chiefs and Raiders face each other on Sunday. The article analyzes the strength of schedule for each undefeated team, noting the Raiders' opponents hold the weakest combined record at 1-5 in other games.