Slugging percentage

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: S L G = ( 1 B ) + ( 2 × 2 B ) + ( 3 × 3 B ) + ( 4 × H R ) A B {\displaystyle \mathrm {SLG} ={\frac {({\mathit {1B}})+(2\times {\mathit {2B}})+(3\times {\mathit {3B}})+(4\times {\mathit {HR}})}{AB}}} Unlike batting average, slugging percentage gives more weight to extra-base hits such as doubles and home runs, relative to singles. Walks are specifically excluded from this calculation, as a plate appearance that ends in a walk is not counted as an at bat. The name is a misnomer, as the statistic is not a percentage but a scale of measure whose computed value is a number from 0 to 4. The statistic gives a double twice the value of a single, a triple three times the value, and a home run four times. A slugging percentage is always expressed as a decimal to three decimal places, and is generally spoken as if multiplied by 1000. For example, a slugging percentage of .589 would be spoken as "five eighty nine." In 2016, the mean average SLG among all batters in Major League Baseball was .417.