American League
Baltimore Orioles: Originally the Milwaukee Brewers, moved to St. Louis for the 1902 season and renamed the Browns, moved to Baltimore in 1954 and renamed the Orioles.
Milwaukee Brewers: Entered the league in 1969 as the Seattle Pilots, moved to Milwaukee in 1970.
Minnesota Twins: Originally the Washington Senators, moved to Minnesota in 1961.
New York Yankees: Originally the Baltimore Orioles, moved to New York in 1903 and renamed the Highlanders, renamed the Yankees in 1913.
Oakland Athletics: Originally the Philadelphia Athletics, moved to Kansas City in 1955 and to Oakland in 1968.
Texas Rangers: Entered the league as the expansion Washington Senators in 1961, moved to Texas in 1972 and renamed the Rangers.
National League
Atlanta Braves: Originally the Boston Braves, moved to Milwaukee in 1953 and to Atlanta in 1966.
Los Angeles Dodgers: Originally the Brooklyn Dodgers, moved to Los Angeles in 1958.
San Francisco Giants: Originally the New York Giants, moved to San Francisco in 1958.
