I know it is hard to comprehend but the stats are taken off of what happened on the ice. They don't just magically populate an excel spreadsheet lol.
Not always. Expected goals or stats based on some arbitrary % rate are not >>> then actual goals.
In the case of the post of "Joonas Korpisalo Goals Saved Above Expectation" .. Who's expectation and who is the shooter taking that shot?
Actual goalie saves made and his sv% is based on real stats based on what happened on the ice, whereas expected stats are computer generated based on predetermined areas on the ice where events occur from and some hypothetical outcome that should happen, and what value/rate you happen to place on that.
A coach will always have a better feel for the game based on viewing the results and experience if a goalie is on his game, his confidence level and his performance.. Similarly I wouldn't expect the Leafs to be playing Campbell instead of Andersen if his hypothetical underlying analytics were better, and I would even say the same if his actual stats were better.
It wouldn't be a stretch to say Korpo has likely outplayed Elvis in camp and in the exhibition game and thus earned the first crack and trying to stop Matthews.. Good luck he is going to need it.
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Putting any value of what happened years ago in 2017-18 seems silly to me based on that post in question.
This series seems to starting both teams playing the goalie with the most NHL experience. That said if Leafs chase Korpisalo from the net, I wouldn't doubt we would see Elvis in short order but not because of the analytics prior to that. IMO