The NHL may be looking into discipline against Johnny Boyhuck for his second period hit on Jonathan Toews that knocked out the Blackhawks captain out of the third period of Game 5 Saturday night.

Toews played the rest of the second period and was on the bench for the third period but did not play in the final 20 minutes. Chicago coach Joel Quennville said Toews was “day-to-day” with an upper-body injury.

The Department of Player Safety reviews every hit, so league officer Brendan Shanahan, who was in attendance in the press box, will no doubt take a look.