Arizona, looking to push its own win streak to three games, couldn't score against a stifling defense that allowed just 21 shots to reach rookie goalie Jordan Binnington. Meanwhile, the Blues scored twice in the first period, forcing the Coyotes to chase the game.
"They defend really well, as we saw tonight," said Darcy Kuemper, who made 20 saves. "Going down 2-0, really tough team to come back on. They did a great job of shutting down. We kept battling, we just couldn't get back into it."
Head Coach Rick Tocchet said not all of the Coyotes came ready to play.
"We were sloppy early and then we gave them the two-goal lead," Tocchet said. "And then they just locked it down. They just kind of sat back and, big team, we didn't really penetrate much ... To beat St. Louis, you've got to be quicker on the puck and early on we were sluggish."