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The WP is calculated by taking a team's wins divided by the number of games it has played (i.e. wins plus losses). For Division 1 NCAA Men's basketball, the WP factor of the RPI was updated in 2004 to account for differences in home, away, and neutral games. A home win now counts as 0.6 win, while a road win counts as 1.4 wins.
Initially the correlation between the formula and actual winning percentage was simply an experimental observation. In 2003, Hein Hundal provided an inexact derivation of the formula and showed that the Pythagorean exponent was approximately 2/(σ √ π) where σ was the standard deviation of runs scored by all teams divided by the average number of runs scored. [8]
Averages per game are denoted by *PG, e.g. PPG (points), BLKPG or BPG (blocks), STPG or SPG (steals), APG (assists), RPG (rebounds) and MPG (minutes).Sometime the players statistics are divided by minutes played and multiplied by 48 minutes (had he played the entire game), denoted by * per 48 min. or *48M.
The history of basketball can be traced back to a YMCA International Training School, known today as Springfield College, located in Springfield, Massachusetts.The sport was created by a physical education teacher named James Naismith, who in the winter of 1891 was given the task of creating a game that would keep track athletes in shape and that would prevent them from getting hurt.
North Carolina, under coach Frank McGuire, was the first known basketball organization to utilize advanced possession metrics to gain a competitive advantage. Since then, sports analytics enthusiasts in basketball have created weighted statistics that measure each player and each team's on-court efficiency.
Sports ratings systems have been around for almost 80 years, when ratings were calculated on paper rather than by computer, as most are today. Some older computer systems still in use today include: Jeff Sagarin's systems, the New York Times system, and the Dunkel Index , which dates back to 1929.
Win probability is a statistical tool which suggests a sports team's chances of winning at any given point in a game, based on the performance of historical teams in the same situation. [1] The art of estimating win probability involves choosing which pieces of context matter.
John Hollinger authored four books in the Pro Basketball Forecast/Prospectus series and was a regular columnist for ESPN Insider. He is a former vice president of basketball operations for the Memphis Grizzlies. Justin Kubatko created and maintained the website Basketball-Reference.com, the pro basketball arm of Sports Reference LLC, until 2013 ...