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Help answer this question below.
The formula (from baseball-almanac.com) is:
Number of (Singles + [2 x Doubles] +[ 3 x Triples] + [4 x Home Runs]) divided by At Bats.
Walks count as plate appearances, but NOT as At Bats.Only hits are used in calculating SLG%.
For example, in 2003 Barry Bonds had 133 hits in 390 At Bats. The breakdown was as follows:
45 HR
1 3B
22 2B
65 1B
Using the above formula we get (65 + [2 x 22] + [3 x 1] + [4 x 45]) / 390
(65 + 44 + 3 + 180) / 390
(292) / 390 = .7487 SLG%
MLB.com also lists the SLG% as .749 Walks do not come into the calculation at any point.
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You're reading How is slugging percentage calculated?
Comments
Yup, SLG uses total bases, and total bases counts only singles, doubles, triples, and homeruns. Not walks.
by Joshua Zambrano on April 14th, 2004