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This is in support of Eric T.’s work today over at NHL Numbers. He adjusted a regression scatter plot, but I think you could also group age and age+1 seasons of 20+ GP (n=912 930) and run a 50-performance rolling average through age compared to percent of change in save percentage. Not only does this suggest that there’s progression followed by fall-off after about 33 or so, but also that very young goaltenders are incredibly volatile in their performance. A 100.1% change in SV% from this chart, incidentally, would be like going from .900 to .901 (goes without saying, but maybe someone wants to see that).

This is in support of Eric T.’s work today over at NHL Numbers. He adjusted a regression scatter plot, but I think you could also group age and age+1 seasons of 20+ GP (n=912 930) and run a 50-performance rolling average through age compared to percent of change in save percentage. Not only does this suggest that there’s progression followed by fall-off after about 33 or so, but also that very young goaltenders are incredibly volatile in their performance. A 100.1% change in SV% from this chart, incidentally, would be like going from .900 to .901 (goes without saying, but maybe someone wants to see that).