Infamous early 20th-century Major League Baseball player and manager, Leo Durocher, explored through the lens of his French Canadian Catholicism. How his various on- and off-field antics compare to his sociocultural situation on the margins of New York City immigrant Catholicism. His early support for Jackie Robinson and his later bigotry relative to popular knowledge about sportsmanship and integration during that time period. The West Springfield, Massachusetts native Durocher's unique competitive spirit in reflection of his cultural and religious roots.