Reginald Martinez “Reggie” Jackson (born May 18, 1946) is a retired American baseball right fielder who played 21 seasons in Major League Baseball (MLB) for five different teams (1967–1987). He was nicknamed “Mr. October” for his clutch hitting in the postseason with the Oakland A’s and the New York Yankees. Jackson won five consecutive American League West divisional pennants, three consecutive American League pennants and two consecutive World Series titles as a member of the Oakland Athletics (he did not play in the 1972 World Series due to injury) from 1971 to 1975; four American League East divisional pennants, three American League pennants and two consecutive World Series titles with the Yankees from 1977 to 1981; and two American League West divisional pennants with the California Angels in 1982 and 1986. He is perhaps best remembered for hitting three consecutive home runs in the clinching game of the 1977 World Series.