The 27-year-old Lewis has been a valuable depth forward for the Kings for the past four seasons. He won a Stanley Cup title with Los Angeles in 2012, scoring nine points in 20 games during the Kings' post-season run.
The former first-round pick from Salt Lake City has a career-best six goals and five assists in 70 games for the Kings this season.
I'm just excited about the opportunity. I've been on the ice earlier than usual and in the weight room, pushing around a little more weights than usual. Every day I go into a workout with a smile on my face and ready to go. When you do have a little more responsibility, you want to take your lunch pail and get ready to work.
— Brian Elliott to Jeremy Rutherford of the Post-Dispatch on being the Blues' No. 1 goalie