The Incredible Hulk S01 E03 Final Round

"Driven by rage. Pursued by an investigative reporter. Wanted for a murder he didn't commit. No one ever said it was easy being green."

David 'Benson' is saved from a couple of muggers by a boxer nicknamed 'Rocky' and becomes his friend and corner-man. Unfortunately the young man suffers from high blood pressure and is being used to ferry drugs by an unscrupulous manager.