Check out today's Wall Street Journal front page piece on DC Nationals restricting ticket sales to DC, Md and Va zips only. Team COO wants an all National fanbase in the ballpark. The funny thing is, the crowd is typically all decked out in red, so you can't tell if its Natl or Philly fans. And the Nats' CFO can't distinguish Nats vs Philly greenbacks in the coffers. Oh! And by the way, Philly Sports Fans are probably the best travelling fan base in the country. Too many work arounds for…