Walter Perry Johnson (November 6, 1887 – December 10, 1946) was an American Major League Baseball pitcher. He played 21 years in the Major Leagues, all for the Washington Senators. He was then the manager of the Senators from 1929 to 1932, and he managed the Cleveland Indians from 1933 to 1935. He was known for being able to throw baseballs with great speed, and he was nicknamed "The Big Train". He set many baseball records and has the second-most wins of all-time. Many people think he is the greatest pitcher of all-time. 