1. Leafs weather Bruins' shot storm in first frame, enter second period with two-goal advantage via goals from Brown, Johnsson. Facing elimination from the playoffs, the Leafs expected an early push from the Bruins in Boston, and that's what they got, as the home team outshot Toronto by more than a 2:1 ratio (15-6) in the first 20 minutes of action. However, Buds goalie Frederik Andersen was at his best in the opening frame, stopping every shot he saw in the period, and that allowed the Leafs to be at their opportunistic best: at the 6:36 mark of the period, centre Auston Matthews carried the puck around behind the Bruins' net, threw it out in front of goalie Tuukka Rask, and winger Connor Brown batted it in for his first-ever playoff goal and a 1-0 Toronto advantage.
Three minutes and 36 seconds later, the Leafs extended their lead when winger Andreas Johnsson took a terrific pass from centre Nazem Kadri and beat Rask for his first career NHL post-season goal, and Toronto took a 2s-0 lead into the first intermission. With their backs against the wall, the Buds needed Andersen to play well and for the skaters in front of him to make the most of their scoring chances - and that's precisely how the first period played out.