Following his very brief professional career, Hamilton served for 14 years as Global Director of Tennis Sports Marketing for Nike, assembling a roster of high-profile athletes which included John McEnroe, Andre Agassi, Pete Sampras and Jim Courier. He then joined Planet Hollywood International as president of their All Star Cafe restaurant division. He then assumed the role of Commisioner of the new-look Professional Bowlers Association. He currently heads up the Hamilton Group, a sports marketing consulting firm.