Mercury Morris, the legendary running back known for his pivotal role in the Miami Dolphins' historic perfect season in 1972 and their Super Bowl victories, has died at the age of 77. Morris was a key member of the Dolphins' unmatched 1972 team, which remains the only NFL team to achieve a perfect season, culminating in two Super Bowl championships. His contributions to the franchise and the game of football will be remembered by fans and fellow players alike.