Blackhawks" Keith Is Suspended for One Game LOS ANGELES - The N.H.L. suspended the Chicago Blackhawks" Duncan Keith for one game for his one-handed high stick on Los Angeles Kings forward Jeff Carter in Game 3 of the Western Conference finals Tuesday. Carter was struck in the mouth and the neck in the second period of the Kings" 3-1 victory. Carter said he sustained damage to several teeth and required about 20 stitches to close various cuts. "It is not an accidental high stick, nor is it a defensive high stick to an opponent," said Brendan Shanahan, the N.H.L. director of player safety. This is a retaliatory high stick to an opponent that causes an injury. Shanahan said the intent, the injury and Keith's previous suspension factored into the decision. Keith was suspended for five games last season for elbowing Vancouver Canucks forward Daniel Sedin in the head. "Obviously, I wanted to give him a tap, but not where I got him," said Keith, who was the Norris Trophy winner in 2010. I felt bad. I'm glad to see that he came back. It was just a scuffle. It was an accident. Keith appeared to apologize to Carter immediately and again after serving his double-minor penalty. His contrition was of little importance to Kings Coach Darryl Sutter, who considered the play retaliatory and worthy of more than a four-minute penalty. "That's three head injuries now in the playoffs for us," he said. It's retaliation with a stick; it's not a high stick. Jarret Stoll returned for Game 1 after receiving a concussion in the Kings" previous series with San Jose that resulted in a six-game suspension for Raffi Torres. The Kings played Games 2 and 3 without Mike Richards, who sustained a concussion on a hit by Dave Bolland.