The teams needed extra time for the third straight game, with Ottawa finally breaking through after 3-2 overtime losses in Games 2 and 3.

Had the attempt by Toronto forward Auston Matthews gone in the net early in overtime instead of clanking the pipe, the Maple Leafs would have won the game and celebrated their first four-game postseason sweep since 2001. It would have propelled them to the second round and a date with either the Florida Panthers or Tampa Bay Lightning.