What is Goals Against Average?
It is considered one statics among a number of other ones, including win/loss ratio and save percentage that are used to help measure a goalie’s capability.
Goals Against Average = (goals against x game length) / minutes played.
If a goalie has been in net for 954 minutes, has allowed 25 goals in that time, and regulation time for the league they play in is 70 minutes per game:
25 goals against times 70 minute game length is 1,750.
1,750 divided by 954 minutes played is 1.83
Therefore, the goalie’s Goals Against Average (GAA) is 1.83
What counts as a “Goal Against”?
If the goalie is not on the field of play at the time when the goals happens, a goal against the team does not cont against the goalie’s GAA.
Rules for what qualifies as a goal can be found with the International Hockey Federation (other leagues with alternative rules may have different scoring regulations).
What counts as a “Minute Played”?
What is “Game Length”?
Field Hockey matches have a game length of 70 minutes (2 halves of 35 minutes). Recreational leagues may have shorter halves.