via Jason Lieser of the Chicago Sun-Times,

The Blackhawks lost a key part of their top line in the 4-3 win over Anaheim on Wednesday. Left wing Drake Caggiula suffered a concussion in the second period when Ducks forward Rickard Rakell smashed him into the glass as Caggiula chased down a puck.

Caggiula stayed down for a minute before being helped off the ice and went immediately to the locker room. The Hawks have no initial indication of the severity of the concussion, though coach Jeremy Colliton said there was no additional injury on the play.

“We’ll see how it goes,” Colliton said. “It’s tough to tell. Sometimes it looks terrible and you’re back right away, and sometimes it looks innocent and it takes forever. So we’ll see.”