The Pittsburgh Penguins entered the Preliminary round as the third seed (and sixth seed overall) earning 89 points during the regular season. The St. Louis Blues earned 84 points during the regular season and entered the Preliminary round as the sixth seed (and tenth seed overall). This was the second playoff series between these two teams, with St. Louis winning the only previous meeting in six games in the 1970 Stanley Cup Semifinals. The teams split this year's regular season series.