Goalie Point Shares Calculator
Definition of Goalie Point Shares:
Goalie Point Shares (GPS) estimates the number of points in the standings contributed by a goaltender based on their performance relative to the league average.
The result is:
0
What are the Goalie Point Shares for a goaltender who has faced 1500 shots and allowed 120 goals in 60 games, on a team that has played 82 games, in a league averaging 3 goals per game?
Formula Explanation:
The formula is complex and involves several steps: 1) Calculate league and goalie save percentages, 2) Determine marginal goals saved, 3) Convert to marginal goals per game, 4) Convert to point shares based on league scoring and goalie's share of team games.
Detailed Explanation:
Goalie Point Shares attempts to quantify a goaltender's contribution to their team's success in terms of standings points. It compares the goalie's performance to league average, estimating how many additional goals they saved (or allowed) compared to an average goaltender. This is then converted to an estimate of points in the standings. GPS is particularly useful for comparing goaltenders across different teams and seasons.
Importance:
This stat is valuable for assessing a goaltender's overall impact on their team's success. It provides a way to compare goaltenders that goes beyond traditional stats like save percentage or goals against average.
Historical Use:
Goalie Point Shares is part of the Point Shares system developed by Justin Kubatko, gaining prominence in advanced hockey analytics in the 21st century.
Historical Context:
GPS is part of the broader Point Shares system, which aims to divide credit for a team's success among its players. It represents an attempt to create a single number that captures a goaltender's overall value.
Limitations:
GPS doesn't account for the quality of shots faced, defensive support, or situational factors like power plays. It also assumes a linear relationship between goals saved and points in the standings.
Example:
If a goalie faces 1500 shots, allows 120 goals in 60 games, on a team that played 82 games, in a league averaging 3.0 goals per game, their GPS might be around 6.5 (exact value depends on the calculation).
Famous Examples:
Goaltenders like Dominik Hasek and Martin Brodeur have historically accumulated high Goalie Point Shares due to their excellent performance over many games played.
Frequently Asked Questions:
What is considered a good Goalie Point Shares value?
This can vary, but for a full season, a GPS above 8 is generally considered very good. Elite goaltenders might exceed 10 or 12 GPS in a season.
How does GPS relate to other goaltending stats?
GPS incorporates elements of save percentage and games played. A goaltender with a high save percentage who plays many games will typically have a high GPS.
Can a goalie have negative Point Shares?
Yes, if a goalie performs significantly worse than the league average, they can have negative Point Shares, indicating they potentially cost their team points in the standings.
Sources:
Goalie Point Shares
Result
0
Shots Against
1500
Goals Against
120
League Average Goals per Game
3
Team Games Played
82
Goalie Games Played
60
What are the Goalie Point Shares for a goaltender who has faced 1500 shots and allowed 120 goals in 60 games, on a team that has played 82 games, in a league averaging 3 goals per game?
Generated at sportcalcs.com