The correct answer is Ty Cobb with batting average .420
Hanley Ramirez won the 2009 National League Batting title with a .342 batting average, and Joe Mauer won the 2009 American League batting title with a .365 batting Average.
Joe Mauer _ Minnesota Twins
Ty Cobb has the highest batting average hitting .366.
Roger Hornsby highest batting average in a season was .424 in 1924.
Ichiro Suzuki holds the highest batting average at .322.
Ty Coob's highest batting average was .420 in 1911
Derek Jeter's highest batting average was .349, it was the 1999 season.
Alex Rodriguez had a .286 batting average in 2009.
Ty Cobb with a .366 batting average
Joe Jackson
Ty cobb has the highest career batting average at .366
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).