Nascar economist Pete Groothuis and I are guest team teaching a sports and society course today (and to show our dedication to our profession we're missing the noontime basketball game). We're covering the economics of sports subsidies. We tell the familiar (at least to sports economists) story that sports stadiums and arenas (and the teams that play there) have little to no economic impact. They do generate public goods but these are most often less than the subsidies provided by city governments.
Here is the presentation (PPT). Thanks to Bruce Johnson for providing most of the slides. Note: we deleted the map of the Commonwealth of Kentucky with PRP inexplicably highlighted.