Welcome to Week 9 of the 2024 NFL season. Unexpected wins from two teams at the bottom of last week's Power Rankings -- the Cleveland Browns and New England Patriots -- and unexpected losses to Week 8 top-10 teams -- the Baltimore Ravens and Minnesota Vikings -- shook up this week's ranking.

On Dec. 29, 1957, the Detroit Lions were undisputedly the best team in the NFL. They won their last championship that day. That was also the end of Jim Brown's rookie season, nine years before the first Super Bowl and a little less than 12 years before man first walked on the moon.