Why is this an important decision? Because Jake Allen started the first game of the season in Toronto and was already seen as St-Louis's number one choice. However, it didn't take long for him to change his mind.
The reality is that the future belongs to Montembeault, and he performed better than Allen, even though the sample size is small, and the Blackhawks may not pose as significant a threat as the Maple Leafs.
So, we'll see tonight if Monty can perform well for a second consecutive game, as he faces a much stronger team.