Reginald Martinez "Reggie" Jackson (born May 18, 1946) is an American former professional baseball right fielder who played 21 seasons for the Kansas City / Oakland Athletics, Baltimore Orioles, New York Yankees, and California Angels of Major League Baseball (MLB). Jackson was inducted into the National Baseball Hall of Fame in 1993.Jackson was nicknamed "Mr. October" for his clutch hitting in the postseason with the Athletics and the Yankees.