The St. Louis Blues managed a pair of power-play goals, killed off two 5-on-3 penalty situations, got 32 saves from Jake Allen and won when Alexander Steen scored the only goal in a shootout for a 3-2 victory over the Buffalo Sabres.

Kevin Shattenkirk and Vladimir Tarasenko scored in regulation for the Blues (13-6-1), who had lost three of four. Allen stopped four shots in the 3-on-3 overtime period and all three shootout attempts.

Steen scored in the third round of the shootout, after Shattenkirk and Tarasenko were denied. The goal was reviewed but it held up.

Sam Reinhart and Ryan O'Reilly scored for the Sabres (8-9-2), who have lost three straight after a stretch of five wins in six games. Linus Ullmark stopped 27 shots, including three in overtime.

The Blues scored first after Tyler Ennis went to the penalty box for 5 minutes for boarding Alex Pietrangelo.

Shattenkirk took advantage 5:34 into the first period with his second goal in two games, assisted by Steen and Tarasenko, on a top-shelf drive past Ullmark, who was screened by David Backes.

The Sabres outshot the Blues 13-10 in the third period, but neither team scored.