Robert Roy Fothergill (August 16, 1897 – March 20, 1938), often referred to by the nicknames "Fats" and "Fatty", and "the People's Choice", was an American baseball player. He played professional baseball, principally as a left fielder, for 14 years from 1920 to 1933, including 12 seasons in Major League Baseball with the Detroit Tigers (1922–1930), Chicago White Sox (1930–1932), and Boston Red Sox (1933). He compiled a .325 career batting average in the major leagues and was one of the best hitters in baseball in the late 1920s, batting .367 in 1926, .359 in 1927, and .354 in 1929. He also compiled 56 extra base hits and 114 RBIs in 1927.