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The goaltender is the unique position in the hockey game because the goaltender is by far the least dependant on his teammates, once the shot gets through. Thus, the Saving percentage statistics provide an efficient gauge to establish a goalie Elo rating. Based on that rating we can also build an expectation of the goaltender's performance in the future.

At the beginning, each goaltender is assigned an Elo rating of 2000. Then, in each game the SV% is the goalie's performance. If the goalie gets a shootout, there is a performance bonus of the (#OfSaves - 10) / 200, when the number of saves is always bumped up to 15 if necessary. The performance is always bumped up to 0.7 to exclude the fluctuations.

The expected performance of a goaltender against a team is a function of his expected SV% (or the SV% of the previous season) and the shooting accuracy of the opposing team (empty net goals excluded). The expected SV% is the goaltender's average SV% of the season (or of the previous season at the beginning of the next one) adjusted by his rating.

And the modified rating carries over to the next game - and to the next season.

The data is available from the Boxscore reports from 1987 onwards. The games where a goalie faces less than three shots are excluded.

? Goalie Elo Ratings

The goaltender is the unique position in the hockey game because the goaltender is by far the least dependant on his teammates, once the shot gets through. Thus, the Saving percentage statistics provide an efficient gauge to establish a goalie Elo rating. Based on that rating we can also build an expectation of the goaltender's performance in the future.

Please visit the Goaltender Home Page for more information about the goalies.


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