James Powell Mattox (December 17, 1896 â October 12, 1973) was an American professional baseball player. He played as a catcher in Major League Baseball for the Pittsburgh Pirates in and .
His brother, Cloy Mattox, played in three games for the Philadelphia Athletics in . Another brother, Marv Mattox, was a teammate in college.
James played college football for the Washington and Lee Generals football team of Washington and Lee University. He was selected in 1919 to the College Football All-Southern Team. He made the field goal to upset Georgia Tech.
Mattox was later a catcher for the Pittsburgh Pirates from 1922 to 1923. He was then sold to the Wichita Falls club.