"I felt I was patient, square to the puck, let the puck come to me, let the play happen, wasn't overly aggressive," Anderson said. "Guys did a great job in front as far as boxing out, picking up sticks, picking up second and third chances."
Trevor Lewis scored for Los Angeles (2-2-1). Jack Campbell, who made 40 saves in a 3-0 shutout against the Montreal Canadiens on Thursday, was pulled in the second period after allowing four goals on 11 shots.
"We've got to do a better job getting prepared for a game," Kings defenseman Jake Muzzin said. "[Campbell] has been good for us all year and we've got to be better for him."
Tierney gave the Senators a 1-0 lead when he redirected a shot from Dylan DeMelo at 6:29 of the first period.
Wideman backhanded a rebound to make it 2-0 at 11:50 of the first period. Los Angeles challenged for goaltender interference, but the goal was upheld after video review.