Duncan Keith will likely be hearing from the NHL's Department of Player Safety after this one.
With Brent Seabrook sidelined due to illness, Keith's ejection marked a first for the Blackhawks.
Coyle left to receive medical attention but was able to return later in the opening period.
A match penalty, if not rescinded by the NHL, carries an automatic one-game suspension, meaning Keith would be ruled out of Friday's game against Winnipeg. Based on his track record, however, it could very well be longer.