Flash Points: Dolphins' defining moment

What key event significantly changed the fortunes of the Dolphins -- for better or worse? Give us your take and we'll give you our definitive moment on May 26.

The Miami Dolphins have had some glorious moments in their illustrious history, but later years haven't measured up to the 1970s.

Miami's course was set in 1970, when owner Joe Robbie signed Baltimore Colts head coach Don Shula. The Dolphins went on an amazing run under Shula's guidance, including the NFL's only undefeated season in 1972. Shula led the Dolphins to five Super Bowls, including three straight in the 1970s. They won two championships.

They haven't won another title since, but Dan Marino thrilled Dolfans for nearly two decades. Marino rewrote the NFL record books with 61,361 yards and 420 touchdowns and is considered the greatest quarterback never to win the Super Bowl.

More recently, the Dolphins made history by rebounding from a one-victory season to win the AFC East championship in 2008. They tied an NFL record for fewest turnovers in a season with a rookie head coach, rookie general manager and a new quarterback.

Submit your vote with the SportsNation poll. If you vote Other, please give us your suggestion in the comments area below this article.