 After playing on the United States hockey team in the 1994 Winter Olympics, he made his NHL debut with Toronto during the 1994 Stanley Cup Playoffs, appearing in two games.Other than a brief move to the New York Islanders during the 1995–96 season, Hendrickson remained with the Maple Leafs until midway through the 1998–99 season, when he was traded to the Vancouver Canucks in exchange for Chris McAllister on February 16, 1999.The Canucks left him unprotected in the 2000 NHL Expansion Draft, and he was selected by the Minnesota Wild.