Ty Cobb has the highest lifetime batting average with .366
Ty Cobb with a .366 batting average
Ty Cobb has the highest career batting average with .366
Ty cobb has the highest career batting average at .366
.385, Arky Vaughan, Pittsburgh Pirates, 1935
Barry Bonds... i think
The highest average for batters who appeared in all six games of the Series was posted by Yankees shortstop Derek Jeter, who hit .407 (11 hits in 27 at bats).