Drafted 8th overall by the Boston Bruins in the 1997 NHL Entry Draft, he won the Calder Memorial Trophy in his rookie season, after scoring 22 times and cumulating a total of 47 points. He played for the Bruins until March 9th 2006, when he was traded to the Edmonton Oilers for Yan Stastny and Marty Reasoner. He helped the Oilers reach the Stanley Cup finals that year, failing to win; he signed as a free agent with Montreal in the 2006 summer. In 2010-11. he joined the Florida Panthers.