Jordan Binnington left Game 3 against the Colorado Avalanche after being involved in a collision with Nazem Kadri. There was no penalty on the play as it looked like incidental contact. But it doesn't seem like Binnington and the Blues thought that was the case.
Look at Kadri's reputation, that's all I've got to say.
During Kadri's post game interview, with TNT, he was asked about the collision with Binnington. In the middle of Kadri's answer it appears Binnington threw a water bottle at Kadri.