You have to be more specific as to what you mean by shortcomings - corsi describes shot attempts at the opposing net. If you're saying that it has a "shortcoming" because, for example, it is not a crystal ball that will tell me who will win the Flames' next 5 games, okay, sure. But in terms of describing what it intends to describe - i.e. whether a team had spent more time in the opponent's end with the puck than their opponent spent in theirs over a series of games - it's really quite good at that.
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