The apparatus in question is a tool designed to compute a critical statistic in ice hockey: the proportion of shots stopped by a goaltender relative to the total number of shots faced. The result, expressed as a decimal or percentage, provides a quantifiable measure of a goaltender’s effectiveness. For example, if a goalie faces 30 shots and stops 27, the calculation yields a value of .900, or 90%, which reflects the proportion of shots they successfully prevented from entering the net.
This calculation is a key performance indicator for evaluating goaltenders at all levels of the sport. It provides a standardized method for comparing the performance of different goaltenders, tracking individual performance over time, and assessing the impact of goaltending on team success. Historically, it has become a primary metric used by coaches, scouts, and general managers for player evaluation, decision-making regarding roster composition, and assessing player value in trades and free agency.