Mike Richards out for Game 2

CHICAGO -- The Los Angeles Kings were without one of their key players for Game 2 of the Western Conference finals Sunday night, as center Mike Richards was out with what the team termed an upper-body injury.

It's the first game all year Richards has missed. He was rocked by a thunderous check late in Game 1 Saturday night by Chicago's Dave Bolland, a hit that seemed to leave Richards dazed.

Richards did not speak to the media after the game.

At his 5 p.m. ET media briefing, Kings coach Darryl Sutter said Richards was "fine" when asked for an update on the star player's condition. And Richards did partake in the pregame warmups, taking line rushes between normal wingers Jeff Carter and Dustin Penner.

Sutter realized Richards couldn't go "right after warmups."

"He was fine today, then I think just once his blood got pumping tonight, the adrenaline got going, there were symptoms," Sutter said. "I went in right after warmup, he was sitting there and I said, 'Unless you're 100 percent, you're not playing.'"

Tyler Toffoli replaced Richards in the Kings' lineup.

Richards has two goals and eight assists for a team-high 10 playoff points.

Defenseman Jake Muzzin also was scratched Sunday after he played in each of Los Angeles' first 14 playoff games.

Information from The Associated Press was used in this report.