Total bases per at-bat — a power rate. A single counts one base, a double two, a triple three and a home run four, so slugging rewards extra-base hits that batting average treats like singles. Despite the name it is an average of bases, not a percentage.
Slugging Percentage (SLG)
Also written: SLG
Standard statistic · MLB
Formula
SLG = TB ÷ AB, where TB = 1B + 2 × 2B + 3 × 3B + 4 × HR
On StatVault
Shown on every MLB profile's batting table (the published season figure). There is no standalone SLG board; slugging is one half of OPS, which has a career board.
Shown on: MLB player profiles — batting table, column SLG