GSAx for NHL hockey goalies

  I do not claim to be an expert on this stat, just intrigued by it. Traditional measures of evaluating goalies have been proven to be ineffective. Obviously the W-L record is the best example of this for reasons we do not need to get into. Save percentage seemed better, and of course it is, but it also does not include within it so much of what goalies actually face, as all shots against are considered equal, no matter the situation or where they come from on the ice. Other stats weight the save pct of a goalie against the league average. This may account for trends in goalscoring across seasons and decades, but does not account for the performance of a goaltender against every shot in a game.  GSAx measures the potential scoring outcome of each shot given several factors, arriving at a total number of expected goals the goalie might allow, and then compares this to the number of actual goals allowed.  Read more here -  Adjusting how we Evaluate and Analyze Goaltenders This article by

Ever since I can remember I have been passionate about hockey, and in particular goaltending. Growing up my position of choice in our local street hockey games was in front of the net. I'd use some old padding I had found somewhere if we played with hard plastic orange road balls or actually hockey pucks, or go without it when we chose to play with tennis balls. I loved keeping the puck/ball out of the net, and contributing to a win. As I grew older I stopped playing but my love of hockey continued, and I combined it with my interest in analyzing statistics. I'd keep large spreadsheets for season and playoff performances and update them after each season had finished. I still do that now, and I do it for hockey, as well as my other passion, baseball.  Baseball is much more of an individual sport than hockey, and as such it is a lot easier to separate out individual from team performances. So my files on baseball stats, for both pitchers and hitters, have grown a lot more comple