Secondary average, or SecA, is a baseball statistic that measures the sum of extra bases gained on hits, walks, and stolen bases (less times caught stealing) depicted per at bat.
[1] Created by Bill James, it is a sabermetric measurement of hitting performance that seeks to evaluate the number of bases a player gained independent of batting average.
[3] However, a low secondary average is not necessarily an indicator of a poor hitter.
Ichiro Suzuki is an example of a hitter who relies on batting average for most of his offensive production.
[2] As Chicago Sun-Times reporter John Grochowski demonstrated, Adam Dunn's offensive value is more apparent when secondary average is accounted for.