Walter Perry Johnson (November 6, 1887 – December 10, 1946), nicknamed "Barney" and "The Big Train", was a Major League Baseball right-handed pitcher. He played his entire 21-year baseball career for the Washington Senators (1907–1927). He later served as manager of the Senators from 1929 through 1932 and for the Cleveland Indians from 1933 through 1935.