FILE - In this March 2 1972, file photo, Minnesota North Stars' Dennis Hextall (22) flips over the back of Philadelphia Flyers Bill Brossart , center, during the first period of an NHL hockey game in Philadelphia. Fifty years ago this week, the owners of the so-called Original Six unanimously approved doubling in size by awarding franchises to Los Angeles, San Francisco/Oakland, Philadelphia, Pittsburgh, St. Louis and Minneapolis/St. Paul. No other pro sports league had ever doubled its amount of teams, but the gamble proved to be one of the most important decisions in hockey history. (AP Photo/File)