Thompson, a center, joined the sixth team of his NHL career when he and defenseman Dion Phaneuf acquired by the Los Angeles Kings in a trade with the Ottawa Senators for forwards Marian Gaborik and Nick Shore on Feb. 13, 2018. A sixth-round pick (No. 183) by the Boston Bruins in the 2003 NHL Draft, Thompson has played for the Bruins, New York Islanders, Tampa Bay Lightning, Anaheim Ducks, Senators and Kings.
Thompson began his major junior hockey career with Seattle of the Western Hockey League in 2001-02. He was drafted by the Bruins after his second season, but remained with Seattle for two more seasons. He joined Providence of the American Hockey League for the 2005 Calder Cup Playoffs.