When the Philadelphia Union made its home debut in its new stadium on Sunday, it marked the end of a multi-year process to bring professional soccer to the region and the beginning of revitalization for a city long crushed by poverty. Even with PPL Park all but sold out, ultimate victory for the city of Chester can't be measured in wins and losses by a soccer club or filled seats. "One of the key things when you look at places that have been successful is that their mindset has been the stadium is one piece of a bigger urban planning puzzle," said Emily Sparvero of Temple's Sport Industry Research Center.