Knies scored the game-winning goal Tuesday in a 2-1 overtime victory over the Bruins in Game 5.
The 21-year-old winger pounced on a rebound early in the first OT period after John Tavares had driven the Boston net and tried to jam home the puck. It was the second goal of the playoffs for Knies, but those represent his only two points in five games. If Auston Matthews (illness) isn't able to return for Thursday's Game 6, Knies may have to come up big again in order for the Leafs to avoid elimination again.