Conversation so far:
When did Harry Hooper start playing with the Red Sox?
Breaking into the majors with the Red Sox in 1909, Harry Hooper played in 81 games and hit .282.
How long did Harry Hooper play for the Red Sox?
Harry Hooper was traded to the Chicago White Sox in March 1921 in exchange for Shano Collins and Nemo Leibold.
Was Harry Hooper in any World Series with the Red Sox?
Harry Hooper is one of only two members of four separate Red Sox World Series championship teams - 1912, 1915, 1916, 1918.
What was one of Harry Hooper's career highlights with the Boston Red Sox?
The Boston Red Sox won the 1912 World Series, during which Hooper made a catch that The Pittsburgh Press referred to as one of the finest plays in baseball history.

Question: what was his batting average with the Red Sox?
Self-contained rewrite: What was Harry Hooper's batting average with the Boston Red Sox?