Boston's first line of David Pastrnak, Brad Marchand and Patrice Bergeron had combined for 20 points through the first two games, while Mitchell Marner, Matthews and Nylander -- Toronto's top scorers in the regular season -- had combined for two, a goal and an assist by Marner.
It was a different story in Game 3. Marner (two assists), Nylander (assist) and Matthews (goal) had four points, while, Pastrnak, Marchand and Bergeron had none and were a combined minus-7.
Though there were other positive aspects of their play to be encouraged with, the Maple Leafs insisted this was about Matthews, about a kid who is the face of the franchise.
"He's a star, one of the best players in the League, and he takes it personally when the team doesn't do well," defenseman Morgan Rielly said. "You could see how much that goal meant to him. You could see it on his face.
"What did he go, pointless for 2 1/2 games? And people were actually calling that a slump? What a joke."
That quickly changed after the goal, when the fans busted out into chants of "Aus-ton Mat-thews …!"
It was a moment in this series, and in Matthews' NHL career, that Toronto coach Mike Babcock said was significant, especially given some of the feedback the second-year player was getting via social media.