The Boston Bruins entered the Preliminary round as the second seed (and fifth seed overall) earning 94 points during the regular season. The Chicago Black Hawks earned 82 points during the regular season and entered the Preliminary round as the seventh seed (and eleventh seed overall). This was the fifth playoff series between these two teams, with Boston winning all four previous meetings. Thus was a rematch of last year's Stanley Cup Semifinals where Boston won in six games. The teams split this year's regular season series.