Anaheim Ducks goaltender John Gibson loses track of the puck as the St. Louis Blues attack in the first period at the Scottrade Center in St. Louis on October 30, 2014. UPI/Bill Greenblatt

Anaheim Ducks goaltender John Gibson loses track of the puck as the St. Louis Blues attack in the first period at the Scottrade Center in St. Louis on October 30, 2014. UPI/Bill Greenblatt

Alexander Steen scored a goal in the first period and Jake Allen stopped all 24 shots for his second NHL shutout in the Blues’ 2-0 win against the first place Anaheim Ducks at Scottrade Center on Thursday night.

The Blues found a way to grind out a win without a few top contributors.  David Backes, T.J. Oshie, Paul Stastny and Joakim Lindstrom all missed the game.  Backes and Oshie each have been diagnosed with a concussion after they sustained injuries Tuesday against the Dallas Stars. Stastny (shoulder) missed his fifth consecutive game, and Lindstrom became missed because of a bacterial infection the Blues have dealt with over the past two weeks.

“You lose those four key offensive additions and key parts of our team, our captain, but to be able to see guys from my perspective step up, watching them out there, [Maxim Lapierre], [Ryan Reaves], [Chris Porter], [Magnus Paajarvi],  those guys filled those guys’ roles. … I had to do my part,” Allen said. “Every team in the League is going to have losses (to injuries) all season long, and unfortunately we have them right now.”

Lapierre assisted on Reeves goal early in the third to give the Blues the 2-0 lead.

The Ducks knew the Blues would come out hard, but didn’t respond.

“We didn’t work,” Ducks captain Ryan Getzlaf said. “It doesn’t matter what you do. If you are standing still in this league, you can’t make plays. It’s a pretty simple explanation. We were standing around watching. It’s all mental. Our responsibility as professionals is to be ready to play. You can make mistakes on the ice, but not moving our legs, not being mental between the ears is our fault.”