Reimer made 41 saves for the Sharks (6-11-3), who have lost two consecutive games at home after winning three straight on the road.
"They beat us to every loose puck, they outbattled us, they outcompeted us," San Jose coach David Quinn said. "I thought our puck management wasn't great all night long, but we were at least hanging around in the first two periods. Took some penalties that put us behind the eight ball.
"It was a step back tonight. [Over] 82 games, you're going to have nights off. OK, let's see how we respond. That's the key. But we stunk. … It hasn't happened in a long time, so let's see how we respond on Monday (against the Ottawa Senators)."