7. Miami Dolphins (1971–1974)

The Miami Dolphins experienced a remarkable stretch with back-to-back Super Bowl victories and the NFL’s only perfect season in 1972, finishing 17-0 under legendary coach Don Shula. The Dolphins’ balanced approach, featuring a strong running game, efficient passing, and a relentless defense, made them nearly unstoppable. Shula’s leadership and adaptability were key to their sustained excellence. Their perfect season remains one of the most iconic achievements in professional sports. Discover more about the Dolphins’ dynasty and their unmatched 1972 season at NFL.com.