As first recall with the Blues and after being held scoreless in his first 24 NHL games, King scored his first career goal against Curtis Joseph in a 5–2 victory of the Phoenix Coyotes on April 4, 2007.

[2] He finished with 27 games for the Blues during the season, registering two points (one goal, one assist) along with 52 penalty minutes.

On July 28, 2010, King was re-signed to a two-year contract extension with the Blues in order to facilitate a trade to the Washington Capitals for Stefan Della Rovere.

[5] A free agent during the 2012–13 season, King was signed to a contract with the minor league team, the Ontario Reign of the ECHL on February 20, 2013.

Some of his most notable fight came against Dion Phaneuf in the WHL,[7] Colton Orr,[8] and Derek Boogaard.