Drafted by the Colorado Avalanche in 1999, Radivojevič signed a 3-year deal with the Phoenix Coyotes on June 19, 2001 and played parts of the next three seasons there. Part of a mid-season trade in 2003–04, he was sent to the Philadelphia Flyers along with Sean Burke and the rights to Ben Eager for Mike Comrie. After 2005–06, the Flyers declined to tender him a qualifying offer, thus making him an unrestricted free agent. He signed with the Minnesota Wild as an unrestricted free agent on July 6, 2006. After a couple seasons with the Wild, he opted to go to the KHL.