John Reaves "Mule" Watson (October 15, 1896 in Arizona, Louisiana – August 25, 1949 in Shreveport, Louisiana), was a professional baseball player who was a pitcher in the Major Leagues from 1918 to 1924. He played for the Boston Braves, Philadelphia Athletics, Pittsburgh Pirates, and New York Giants. On the 12th and 13 August 1921, Watson became the last pitcher in Major League history to start both games of a doubleheader twice in the same season.