The Geography Of Sport

Reeves Wiedeman mulls "how much of athletic success is owed to place of birth":

Adjusted for population size, Jackson, Mississippi, has produced more current N.F.L. players than any other metro area in the United States. Being born there doesn’t guarantee a Division I football scholarship, but your chances are better than they are in Duluth, Minnesota, where the chance to train, hockey-wise, exists year-round, but no one wants to freeze through blocking drills in February. In the South, and California—the fastest growing home to N.F.L.ers—and any other place where the temperature rarely drops below fifty, the climate is more conducive to year-round two-a-days.