Henry Louis Aaron  (February 5, 1934 – January 22, 2021), nicknamed " Hammer " or " Hammerin' Hank ", was an American professional  baseball   right fielder  who played 23 seasons in  Major League Baseball  (MLB), from 1954 through 1976. He spent 21 seasons with the  Milwaukee / Atlanta Braves  in the  National League  (NL) and two seasons with the  Milwaukee Brewers  in the  American League  (AL).