Goals against average (GAA), also known as average goals against (AGA), is a

statistic A statistic (singular) or sample statistic is any quantity computed from values in a sample which is considered for a statistical purpose. Statistical purposes include estimating a population parameter, describing a sample, or evaluating a hypot ...

used in

field hockey Field hockey (or simply referred to as hockey in some countries where ice hockey is not popular) is a team sport structured in standard hockey format, in which each team plays with 11 players in total, made up of 10 field players and a goalk ...

ice hockey Ice hockey (or simply hockey in North America) is a team sport played on ice skates, usually on an Ice rink, ice skating rink with Ice hockey rink, lines and markings specific to the sport. It belongs to a family of sports called hockey. Tw ...

lacrosse Lacrosse is a contact team sport played with a lacrosse stick and a lacrosse ball. It is the oldest organized sport in North America, with its origins with the indigenous people of North America as early as the 12th century. The game w ...

soccer Association football, more commonly known as football or soccer, is a team sport played between two teams of 11 Football player, players who almost exclusively use their feet to propel a Ball (association football), ball around a rectangular f ...

, and

water polo Water polo is a competitive sport, competitive team sport played in water between two teams of seven players each. The game consists of four quarters in which the teams attempt to score goals by throwing the water polo ball, ball into the oppo ...

that is the

mean A mean is a quantity representing the "center" of a collection of numbers and is intermediate to the extreme values of the set of numbers. There are several kinds of means (or "measures of central tendency") in mathematics, especially in statist ...

of goals allowed per game by a

goaltender In ice hockey, the goaltender (commonly referred to as goalie or netminder) is the player responsible for preventing the hockey puck from entering their own team's net, thus preventing the opposing team from scoring. The goaltender mostly plays ...

goalkeeper In many team sports that involve scoring goal (sport), goals, the goalkeeper (sometimes termed goaltender, netminder, GK, goalie, or keeper) is a designated player charged with directly preventing the opposing team from scoring by blocking or i ...

(depending on sport). GAA is analogous to a

baseball Baseball is a bat-and-ball games, bat-and-ball sport played between two team sport, teams of nine players each, taking turns batting (baseball), batting and Fielding (baseball), fielding. The game occurs over the course of several Pitch ...

pitcher In baseball, the pitcher is the player who throws ("Pitch (baseball), pitches") the Baseball (ball), baseball from the pitcher's mound toward the catcher to begin each play, with the goal of out (baseball), retiring a batter (baseball), batter, ...

earned run average In baseball statistics, earned run average (ERA) is the average of earned runs allowed by a pitcher per nine innings pitched (i.e. the traditional length of a game). It is determined by dividing the number of earned runs allowed by the number ...

(ERA). In Japanese, the same translation (防御率) is used for both GAA and ERA, because of this. For ice hockey, the goals against average statistic is the number of goals a goaltender allows per 60 minutes of playing time. It is calculated by taking the number of goals against, multiplying that by 60 (minutes) and then dividing by the number of minutes played. The modification has been used by the

National Hockey League The National Hockey League (NHL; , ''LNH'') is a professional ice hockey league in North America composed of 32 teams25 in the United States and 7 in Canada. The NHL is one of the major professional sports leagues in the United States and Cana ...

(NHL) since 1965 and by the

International Ice Hockey Federation The International Ice Hockey Federation (IIHF; ; ) is a worldwide governing body for ice hockey. It is based in Zurich, Switzerland, and has 84 member countries. The IIHF maintains the IIHF World Ranking based on international ice hockey to ...

(IIHF) since 1990. When calculating GAA, overtime goals and time on ice are included, whereas empty net and shootout goals are not. It is typically given to two decimal places. The top goaltenders in the NHL have a GAA of about 1.85–2.10, although the measure of a good GAA changes as different playing styles come and go. The top goaltenders in the

National Lacrosse League The National Lacrosse League (NLL) is a professional box lacrosse league in North America. The league comprises 14 teams8 in the United States and 6 in Canada. The NLL is headquartered in Philadelphia, Pennsylvania, Philadelphia, Pennsylvania. ...

, however, 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 The National Collegiate Athletic Association (NCAA) is a nonprofit organization that regulates College athletics in the United States, student athletics among about 1,100 schools in the United States, and Simon Fraser University, 1 in Canada. ...

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,

save percentage Save percentage (often known by such symbols as SV%, SVS%, SVP, PCT) is a statistic in various Goal (sports), goal-scoring sports that track Save (goaltender), saves as a statistic. In ice hockey and lacrosse and association football, it is a sta ...

is usually considered a more accurate measure of a goaltender's skill, especially in ice hockey and lacrosse, as it takes into account the number of shots the goaltender has faced. In soccer, since it is considered a part of the goalkeeper's job to coach defenders on proper positioning to prevent opponents' shots, GAA is more commonly used to evaluate goalkeepers than save percentage.

References

{{DEFAULTSORT:Goals Against Average Ice hockey statistics