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In baseball statistics, slugging percentage (SLG) is a measure of the batting productivity of a hitter. It is calculated as total bases divided by at-bats , through the following formula, where AB is the number of at-bats for a given player, and 1B , 2B , 3B , and HR are the number of singles , doubles , triples , and home runs , respectively:
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]
The same information provided by runs created can be expressed as a rate stat, rather than a raw number of runs contributed. This is usually expressed as runs created per some number of outs, e.g. R C 27 {\displaystyle {\frac {RC}{27}}} (27 being the number of outs per team in a standard 9- inning baseball game).
Despite its simple calculation, OPS is a controversial measurement. OPS weighs on-base percentage and slugging percentage equally. However, on-base percentage correlates better with scoring runs. [9] Statistics such as wOBA build on this distinction using linear weights. Additionally, the components of OPS are not typically equal (league ...
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]
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 produced is a baseball statistic that can help estimate the number of runs a hitter contributes to his team. The formula adds together the player's runs and run batted in, and then subtracts the player's home runs.
The lowest game score in baseball's modern era was Allan Travers' 26-hit, 24-run start for the Detroit Tigers on May 18, 1912. His game score was a −52. This performance only came about because the regular Tiger players staged a strike in protest of Ty Cobb's suspension. To avoid a forfeit, local college players (including Travers) were ...