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

Entering Week 4 of the 2026 NFL season, five teams remain undefeated at 3-0: the Kansas City Chiefs, Las Vegas Raiders, Buffalo Bills, Minnesota Vikings, and San Francisco 49ers. With the Chiefs and Raiders scheduled to face each other on Sunday, at least one team will be eliminated from perfection immediately. FOX Sports writer Greg Auman assesses the contenders to predict which club will be the final undefeated team standing.

Auman projects that the Raiders will lose in Week 4 against Kansas City, followed by the 49ers losing to Seattle, the Bills falling to the Rams, and the Chiefs dropping a Week 7 matchup against the Seahawks. Ultimately, Auman predicts the Minnesota Vikings will be the last remaining undefeated team, staying perfect until a projected Week 8 defeat against the Detroit Lions.