These are some subjects that can be used in the GW and Consortium catalogue and Worldcat::
Sports Political Aspects
Sports and State
Also, names of individual sports followed by economic aspects (e.g. baseball economic aspects).
Search WorldCat to find books in libraries throughout the United States and in selected libraries worldwide. Books not available at Gelman can be requested via Consortium loan or Interlibrary loan. In WorldCat look for the "Request this item through ILL" note in individual records.