Secondary average, or SecA, is a baseball statistic - more precisely, a sabermetric measurement of hitting performance. It is a complement to batting average, which is a simple ratio of base hits to at bats. Secondary average is a ratio of bases gained from other sources (extra base hits, walks and net bases gained through stolen bases) to at bats. Secondary averages have a higher variance than batting averages.
In modern Major League Baseball, a secondary average higher than about .500 is considered outstanding, and one below .200 is considered very poor. The league average SecA is typically similar to the league average batting average, in the range of .250-280.
The formula is
where
- TB = Total bases
- H = Hits
- BB = bases on balls
- SB = Stolen bases
- CS = Caught stealing
- AB = At bats
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