Goals against average
Goals against average (GAA) is an ice hockey statistic that is the mean of goals allowed per game by a goaltender. It is calculated by multiplying the number of goals allowed by the number of minutes in one game, and then dividing by the number of minutes played. It is typically given to two decimal places.
GAA is analogous to a baseball pitcher's earned run average.
The top goaltenders in the NHL currently have a GAA of about 2.00, although the measure of a good GAA changes as different playing styles come and go.
Since the statistic is highly dependent on the team playing in front of a goalie, save percentage is usually considered a more accurate measure of a goaltender's skill.