|STL||0||1||0||(0 - 0)||1|
|MIN||2||1||2||(0 - 0)||5|
Wyatt Smith had two goals, and Pierre-Marc Bouchard, Branko Radivojevic and Wes Walz also scored for the Wild, who will meet Anaheim in the first round of the playoffs next week.
Backstrom was coming off consecutive shutouts of Edmonton, but the Blues broke Minnesota's franchise-record scoreless streak at 169 minutes, 20 seconds when Peter Sejna beat the Finnish goalie between the pads with a shallow angle shot in the second period.
Walz came right back on a breakaway, taking a pretty backhand feed from Marian Gaborik and deking Curtis Sanford for a 3-1 lead.