# Secondary Average Calculator & Formula

In baseball sabermetrics, a batter's secondary average is the ratio of bases gained through walks, stolen bases, etc. to at-bats. It complements the batting average and slugging percentage because it indicates how often a player reaches base by means other than hitting the ball. The abbeviation for secondary average is SecA.

### Formula for SecA

Like other sabermetrics, the secondary average is a decimal that ranges from 0 to 1. Its equation isSecA =

(TB - H + BB + SB - CS)/AB.

Since TB and H are both linear functions of 1B, 2B, 3B, and HR, you can rewrite the formula in an equivalent form:

SecA =

(2B + 2*3B + 3*HR + BB + SB - CS)/AB.

**Example:**In 1990, Ken Griffey Jr. had 28 doubles, 7 triples, 22 home runs, 63 walks, 16 stolen bases, 11 caught stealing, and a total of 597 at bats.

2B = 28

3B = 7

HR = 22

BB = 63

SB = 16

CS = 11

AB = 597

His secondary average for the year was then

SecA = (28 + 2*7 + 3*22 + 63 + 16 - 11)/597

= 176/597

= 0.2948

Secondary averages above 0.5 are considered excellent. Usually, a player with a high batting average or high slugging percentage will also have a high secondary average.

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