The incident happened in the second period and sparked an intense fight during the Blues’ 2-0 win.
You can see the entire sequence in the video above.
As the two players were going for a loose puck along the boards, Sundqvist flung his arm around and basically clotheslined Boqvist in the face, knocking him to the ice. From there, St. Louis’ Vince Dunn and Chicago’s Drake Caggiula dropped the gloves and went at each other.
Sundqvist was given a two-minute minor for elbowing and a two-minute for roughing on the play.
Dunn and Caggiula were each given five-minute majors for fighting.