Check in Monster.Com for a company called Women in Sports (or something like that). They claim to have sports jobs available all over the country.
Are you locked into the DC/Baltimore area. Sports PR jobs, much like broadcasting, are fairly scarce. If you are willing to relocate, it could be much easier to find work.
The above is the opinion of the poster which may or may not be based in known facts and does not necessarily reflect the views of Delta Tau Delta or Greek Chat -- but it might.