According to an official statement, Rielly is now scheduled for an in-person hearing due to the cross-check he delivered to Ottawa Senators forward Ridly Greig's head. In-person hearings are reserved for potential suspensions of 5 or more games, indicating that Rielly is facing a significant punishment.
The cross-check occurred in the dying seconds of the game, after the play had stopped following a goal, and was evidently a retaliatory action following Greig's questionable decision to take a slap shot into an empty net.