How much money does the average person make in sports marketing?

I will receive my bachelors in sport management from Ohio University with a minor in business and am looking to find a job in a sport marketing firm primarily in Chicago or a large city. I am interested in working in marketing or sponsorship and want to focus more on business rather than sports if that makes any sense. I am looking to work in the highest paid part of the sports industry but am not quite sure if sports marketing is it. Also, if any one knows any great sport marketing firms please list. Any advice would be greatly appreciated. Thanks!

Im doing a degree in marketing and we were told theres big monry in sports sponsorship, starting at about €50,000 per year!