Following Mirtle's lead once again, bizjournals.com came out last month with a comparison of which US sports markets were overextended, based on total personal income compared to the requirements of current professional sports teams located there. For example, the Tampa/St. Petersburg/Clearwater, Florida area was judged to be the most overextended, since the combined personal income of $75.6 billion supports an NFL, NHL, and MLB team. Compare that to a city like Seattle, which has three teams as well (NFL, MLB, and NBA), but boasts a total personal income of $156.6 billion*. The neat part is that bizjournals posted a spreadsheet with some of the details. So let's tour some of the numbers, remembering that this refers only to income levels vs. the requirements to support a local team, based on ticket prices and other factors. The income levels to support various teams were as follows: Major League Baseball, $89.2 billion National Basketball Association, $38.4 billion National ...