John Challis was diagnosed with Hepatocellular Carcinoma in June, 2006. Throughout his 2-year battle, he met some of the biggest names in sports and through these encounters, his positive outlook inspired athletes such as Mario Lemiuex, Ben Roethlisberger and Alex Rodriguez. In the end, he lost his battle with cancer on August 19, 2008, but not before reminding everyone he encountered to live life to the fullest.