Hall of Fame running back and Southern University coach Marshall Faulk, 53, says he has Parkinson's disease and that medication is…. Marshall Faulk, the Pro Football Hall of Fame running back who now coaches Southern University, has been diagnosed with Parkinson's disease, WSLS 10 reported in an Associated Press story. He made the diagnosis public on Wednesday during an appearance on the podcast The Caring Neurologist, hosted by Dr.