The single postseason batting average leader is Lloyd McClendon with 16 plate appearances, he batted .727 in the 1992 postseason.
.326
Ty Cobb had a lifetime batting average of .366
He had a .344 average for the 2009 postseason.
Ty Cobb with a .366 batting average
His lifetime Batting Average is .109, he was 54 for 497.
.321 World Series Batting AverageThrough 2010, Derek Jeter played in 7 World Series, and has a lifetime World Series batting average of .321, 50 hits in 156 at bats.
272 in the regular season and 4 in the postseason. In his MLB career, Maddux had 272 hits in 1591 at bats for a .171 batting average in the regular season and 4 hits in 55 at bats for a .073 batting average in the postseason.
Ty cobb has the highest career batting average at .366
.293
.302
Sisler's lifetime average was .340 over a career that spanned 1915-1930.