Tonight's Utah vs. BYU game went to the Cougars -- quite easily -- but at the end of the game tempers flared and Utah's Marshall Henderson knocked over BYU's Jackson Emery with a punch or arm swipe (hard to tell from the video). 

The incident is hard to see but it is at the nine second mark and you need to pay close attention or you will miss it, due to the shaky video and some dudes head in the way.