Vladimi Sobotka, who spent the last three seasons playing in Russia, scored in his first game back to lift the Blues over the Colorado Avalanche 3-2 on Sunday in the regular-season finale for both teams.
The Blues have won 15 of their last 19 games. They'll open the postseason with a best-of-seven series against Minnesota.
Colorado finished the season with an NHL-low 48 points. The Avs have lost 11 of their last 13 games in St. Louis.
Sobotka played in the NHL for the first time since April 27, 2014. He spent the last three years with Omsk Avangard of the Russian-based Kontinental Hockey League. His last NHL goal came on April 6, 2014 as a member of the Blues.
Sobotka scored at 3:20 of the third period to tie it at 2. Vladimir Tarasenko scored the winner 79 seconds later.
St. Louis goalie Jake Allen made 32 saves, and Zach Sanford also scored for the Blues, who will be facing the Wild for the second time in three postseasons. Minnesota beat St. Louis in six games in a first-round series in 2014-2015.