Goals against average

Goals Against Average (GAA) is a statistic used in ice hockey, water polo, lacrosse, and soccer that is the mean of goals allowed per game by a goaltender.

For ice hockey, it is calculated per game by dividing the number of goals against multiplied by 60 (or the total amount played per game) by the number of minutes played. For a season, divide the total number of goals against by the result of the total number of minutes played (also known as time on ice) divided by 60. Alternatively, take the number of goals against, multiply that by 60 minutes and then divide by the amount of minutes played. It is typically given to two decimal places.

GAA is analogous to a baseball pitcher's earned run average (ERA). In Japanese language, the same translation (防御率) is used for both GAA and ERA, because of this analogy.

The top goaltenders in the National Hockey League currently have a GAA of about 2.00, although the measure of a good GAA changes as different playing styles come and go. The top goaltenders in the National Lacrosse League however, currently have a GAA of about 10.00, and the top 2005 Western Lacrosse Association goaltenders had a GAA of about 9.00. At their best, elite NCAA water polo goalies have a GAA between 3.00 and 5.00.

Since the statistic is highly dependent on the team playing in front of a goalie,......
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