The Canucks appeared to tie the game with three minutes left in the middle frame after Nils Aman shot the puck into the net just moment after it was dislodged, however, the referees upheld the no-goal call after a lengthy review.
The NHL Situation Room said Aman did not have an imminent scoring opportunity prior to the goal posts being displaced, stating the "decision was made in accordance with Rule 63.7, which states, in part, that 'In the event that the goal post is displaced, either deliberately or accidentally, by a defending player, prior to the puck crossing the goal line between the normal position of the goalposts, the referee may award a goal. In order to award a goal in this situation, the goal post must have been displaced by the actions of a defending player, the attacking player must have an imminent scoring opportunity prior to the goal post being displaced, and it must be determined that the puck would have entered the net between the normal position of the goal posts.'"
Boeser tied the game at 11:48 of the third period, after he one-timed a puck from the left circle past Vejmelka on a broken play, setting up Horvat's game-winner in overtime.
The Canucks entered Saturday with the seventh-best power play in the league, and the man advantage was Vancouver's key to victory.
Coyotes head coach André Tourigny said the team "left a point on the table."
"It's a team on the other side feeds off either turnovers or the power play," he said. "We gave them a chance to be there. We're really good at 5-on-5, but if you give them a chance, that many power plays, or a 5-on-3, the chance that they will win is pretty high."
The Coyotes are back in action in Calgary on Monday, and the game will be broadcast on Bally Sports Arizona Extra (TV) and Arizona Sports 98.7 FM (Radio). Puck drop is scheduled for 7 pm MST.