Ottawa Senators pulled off the upset to defeat Buffalo Sabres. Ottawa Senators entered the game as the underdog, with a 35% chance to win before the game started.
From the outset, Ottawa Senators refused to go away, chipping away at Buffalo Sabres's lead until Ottawa Senators took their first lead during the middle stretches of the game. Buffalo Sabres did not go quietly, recapturing the lead for themselves, until Ottawa Senators regained control for good toward the end of the game.