Jeff began his career as an acrobatic slam dunk artist in 1996 touring with the #1 half-time act in basketball, the Slam Dunk Daredevils. He traveled the world with the Daredevils where he was not only a performer, but also Director of Operations.
Jeff left the Daredevils in 1998 when the Boston Celtics signed him to become the first mascot in the history of the organization. After two seasons with the Celtics, Jeff and his family moved to Dallas,TX when he signed with the Dallas Mavericks to perform as Mavs Man. In his first season with the Mavericks, Sports Illustrated named Jeff the 2nd best mascot in the NBA behind the Phoenix Gorilla.