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Like many original sabermetric concepts, the idea of a defensive spectrum was first introduced by Bill James in his Baseball Abstract series of books during the 1980s. [2] The basic premise of the spectrum is that positions on the right side of the spectrum are more difficult than the positions on the left side.
Defensive rating or defensive efficiency is a statistic used in basketball to measure an individual player's efficiency at preventing the other team from scoring points. It was created by author and statistician Dean Oliver . [ 1 ]
PER largely measures offensive performance. Hollinger freely admits that two of the defensive statistics it incorporates—blocks and steals (which was not tracked as an official stat until 1973)—can produce a distorted picture of a player's value and that PER is not a reliable measure of a player's defensive acumen.
The National Basketball Association (NBA) first tracked all games at the start of the 2013-14 NBA season. [1] Second Spectrum is the current Official Optical Tracking Provider of the NBA and began league-wide tracking in the 2017-18 NBA season, replacing STATS SportVU which previously held the league-wide contract. [2]
Range Factor (commonly abbreviated RF) is a baseball statistic developed by Bill James.It is calculated by dividing putouts and assists by the number of innings or games played at a given defense position. [1]
Doc Rivers left broadcasting behind when he took over as the Milwaukee Bucks’ coach at midseason, but he remains as talkative as ever. The Bucks have won six straight games and own the NBA’s ...
However, the values are calculated differently for pitchers and position players: position players are evaluated using statistics for fielding, base running, and hitting, while pitchers are evaluated using statistics related to the opposing batters' hits, walks, and strikeouts in FanGraphs' version and runs allowed per 9 innings with a team ...
According to the modified PER formula used at Basketball-Reference.com, [4] the highest PER ever achieved over an entire single season in the NBA was 32.85 by Nikola Jokić in 2021–22. Wilt Chamberlain held the distinction of being the only player with a PER over 30 over an entire single season for 2½ decades, after having a PER of 31.84 in ...