John Tortorella doubles down on controversial challenge that backfired

The NHL's situation room upheld the call on the ice, and instead of Vegas taking a 3-2 lead, it found itself short-handed due to the ensuing delay-of-game penalty that came from the failed challenge.

Carolina immediately scored to take a 3-2 lead of its own.

The NHL's position is that goaltender  Frederik Andersen had the puck covered, only to have Dorofeyev push Andersen's glove to knock the puck into the net. 

Tortorella said after the game he saw a loose puck in the crease, his player poked at it, it ended up in the net and that he would challenge it again 10 out of 10 times.

He is entitled to that belief, but it seemed like a bad idea to challenge at the time. Mainly because the NHL almost never overturns calls where goaltending interference is called on the ice. 

How rare is it? 

A year ago, the NHL upheld 96% of the replay reviews where no-goal was called on the ice. That puts an enormous burden of proof to overturn a play like that. 

While you could make the argument that the upside would have been significant had Vegas won the challenge and took the lead, the potential risk almost certainly outweighed that reward. Given the high burden of proof to overturn that type of play, as well as the penalty for being wrong (a penalty at a crucial moment in a tie game), it seems to be a situation where it might have been best just to take the call on the ice and move on.

Tortorella disagreed.

It certainly changed the game.

It may have changed the series.