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Goals-against Average
Goals against average (GAA) also known as "average goals against" or "AGA" is a statistic used in field hockey, ice hockey, lacrosse, soccer, and water polo that is the mean of goals allowed per game by a goaltender or goalkeeper (depending on sport). GAA is analogous to a baseball pitcher's earned run average (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, multiply that by 60 (minutes) and then dividing by the number of minutes played. The modification is used by the NHL since 1965 and the 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 National Hockey League have a GAA of about 1.85-2.10, altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goalkeeper
In many team sports which involve scoring 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 intercepting opposing shots on goal. Such positions exist in bandy, rink bandy, camogie, association football, Gaelic football, international rules football, floorball, handball, hurling, field hockey, ice hockey, roller hockey, lacrosse, ringette, rinkball, water polo, and shinty as well as in other sports. In most sports which involve scoring in a net, special rules apply to the goalkeeper that do not apply to other players. These rules are often instituted to protect the goalkeeper (being a target for dangerous or even violent actions). This is most apparent in sports such as ice hockey, field hockey, and lacrosse, where goalkeepers are required to wear special equipment like heavy pads and a face mask to protect their bodies from the impact of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Lacrosse Association
The Western Lacrosse Association (WLA) is a men's Senior A box lacrosse sanctioned by the Canadian Lacrosse Association. It consists of seven teams, based in cities throughout southwestern British Columbia. Each year, the playoff teams battle for the right to compete against the Major Series Lacrosse champion for the Mann Cup every September. The championship is hosted alternately between Ontario and British Columbia every year. The calibre of lacrosse in the WLA is very high, as the majority of its players also play in the National Lacrosse League during the winter months, while the WLA schedule runs from mid-May to August. The teams The league consists of the following teams: League history * B''ox lacrosse'''' adopted by British Columbia Amateur Lacrosse Association on May 4, 1932'' * 1932-1933: Senior Box Lacrosse League (''under BCALA umbrella'') * 1934-1967: Inter-City Lacrosse League (ICLL) * 1968: National Lacrosse Association (Western Division) * 1969–present: Weste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Lacrosse League
The National Lacrosse League (NLL) is a men's professional box lacrosse league in North America. The league is headquartered in Philadelphia, Pennsylvania, Philadelphia, Pennsylvania. The NLL currently has fifteen teams: ten in the United States and five in Canada. The NLL ranks third in average attendance for pro indoor sports worldwide, behind only the National Hockey League, NHL and National Basketball Association, NBA. Unlike other box lacrosse leagues which play in the summer, the NLL plays its games in the winter and spring, from December to June. Each year, the playoff teams battle for the National Lacrosse League Cup. The NLL has averaged between 8,900 and 10,700 spectators per game each year since 2004. Box lacrosse rules The NLL plays four 15-minute quarters with 2-minute breaks between quarters and a 15-minute half-time. At the start of the each quarter and after every goal, players will "face-off" at the center of the field to determine who will get possession. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Hockey League
The National Hockey League (NHL; french: Ligue nationale de hockey—LNH, ) is a professional ice hockey league in North America comprising 32 teams—25 in the United States and 7 in Canada. It is considered to be the top ranked professional ice hockey league in the world, and is one of the four major professional sports leagues in the United States and Canada. The Stanley Cup, the oldest professional sports trophy in North America, is awarded annually to the league playoff champion at the end of each season. The NHL is the fifth-wealthiest professional sport league in the world by revenue, after the National Football League (NFL), Major League Baseball (MLB), the National Basketball Association (NBA), and the English Premier League (EPL). The National Hockey League was organized at the Windsor Hotel in Montreal on November 26, 1917, after the suspension of operations of its predecessor organization, the National Hockey Association (NHA), which had been founded in 1909 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 of innings pitched and multiplying by nine. Thus, a lower ERA is better. Runs resulting from passed balls or defensive errors (including pitchers' defensive errors) are recorded as unearned runs and omitted from ERA calculations. Origins Henry Chadwick is credited with devising the statistic, which caught on as a measure of pitching effectiveness after relief pitching came into vogue in the 1900s. Prior to 1900—and, in fact, for many years afterward—pitchers were routinely expected to pitch a complete game, and their win–loss record was considered sufficient in determining their effectiveness. After pitchers like James Otis Crandall and Charley Hall made names for themselves as relief specialists, gauging a pitcher's e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitcher
In baseball, the pitcher is the player who throws ("pitches") the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of retiring a batter, who attempts to either make contact with the pitched ball or draw a walk. In the numbering system used to record defensive plays, the pitcher is assigned the number 1. The pitcher is often considered the most important player on the defensive side of the game, and as such is situated at the right end of the defensive spectrum. There are many different types of pitchers, such as the starting pitcher, relief pitcher, middle reliever, lefty specialist, setup man, and the closer. Traditionally, the pitcher also bats. Starting in 1973 with the American League(and later the National League) and spreading to further leagues throughout the 1980s and 1990s, the hitting duties of the pitcher have generally been given over to the position of designated hitter, a cause of some controversy. The Japanese Central Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baseball
Baseball is a bat-and-ball sport played between two teams of nine players each, taking turns batting and fielding. The game occurs over the course of several plays, with each play generally beginning when a player on the fielding team, called the pitcher, throws a ball that a player on the batting team, called the batter, tries to hit with a bat. The objective of the offensive team (batting team) is to hit the ball into the field of play, away from the other team's players, allowing its players to run the bases, having them advance counter-clockwise around four bases to score what are called " runs". The objective of the defensive team (referred to as the fielding team) is to prevent batters from becoming runners, and to prevent runners' advance around the bases. A run is scored when a runner legally advances around the bases in order and touches home plate (the place where the player started as a batter). The principal objective of the batting team is to have a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goaltender
In ice hockey, the goaltender (commonly referred to as the goalie) is the player responsible for preventing the hockey puck from entering their team's net, thus preventing the opposing team from scoring. The goaltender mostly plays in or near the area in front of the net called the ''Ice hockey rink#Crease, goal crease'' (often referred to simply as '' the crease''). Goaltenders tend to stay at or beyond the top of the crease to cut down on the angle of shots. In the modern age of goaltending there are two common styles, butterfly and hybrid (hybrid is a mix of the traditional stand-up style and butterfly technique). Because of the power of shots, the goaltender wears special equipment to protect the body from direct impact. Goaltenders are one of the most important players on the ice, as their performance may greatly impact the outcome or score of the game. One-on-one situations, such as breakaways and shootouts, have the tendency to showcase a goaltender's pure skill, or lack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 hypothesis. The average (or mean) of sample values is a statistic. The term statistic is used both for the function and for the value of the function on a given sample. When a statistic is being used for a specific purpose, it may be referred to by a name indicating its purpose. When a statistic is used for estimating a population parameter, the statistic is called an ''estimator''. A population parameter is any characteristic of a population under study, but when it is not feasible to directly measure the value of a population parameter, statistical methods are used to infer the likely value of the parameter on the basis of a statistic computed from a sample taken from the population. For example, the sample mean is an unbiased estimator of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goal (ice Hockey)
In ice hockey, a goal is scored when the puck entirely crosses the goal line between the two goal posts and below the goal crossbar. A goal awards one point to the team attacking the goal scored upon, regardless of which team the player who actually deflected the puck into the goal belongs to (see also own goal). Typically, a player on the team attempting to score shoots the puck with their stick towards the goal net opening, and a player on the opposing team called a goaltender tries to block the shot to prevent a goal from being scored against their team. The term goal may also refer to the structure in which goals are scored. The ice hockey goal is rectangular in shape; the front frame of the goal is made of steel tube painted red (blue in the ECHL because of a sponsorship deal with GEICO) and consists of two vertical goalposts and a horizontal crossbar. A net is attached to the back of the frame to catch pucks that enter the goal and also to prevent pucks from entering it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mean
There are several kinds of mean in mathematics, especially in statistics. Each mean serves to summarize a given group of data, often to better understand the overall value (magnitude and sign) of a given data set. For a data set, the ''arithmetic mean'', also known as "arithmetic average", is a measure of central tendency of a finite set of numbers: specifically, the sum of the values divided by the number of values. The arithmetic mean of a set of numbers ''x''1, ''x''2, ..., x''n'' is typically denoted using an overhead bar, \bar. If the data set were based on a series of observations obtained by sampling from a statistical population, the arithmetic mean is the ''sample mean'' (\bar) to distinguish it from the mean, or expected value, of the underlying distribution, the ''population mean'' (denoted \mu or \mu_x).Underhill, L.G.; Bradfield d. (1998) ''Introstat'', Juta and Company Ltd.p. 181/ref> Outside probability and statistics, a wide range of other notions of mean are o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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