More than one NFL team played in Baltimore between 1953-1983 .
Three of its teams were admitted to the NFL : the San Francisco 49ers , the Cleveland Browns and the Baltimore Colts ( not related to the later NFL team that would play in Baltimore from 1953 through 1983 , now the Indianapolis Colts ) .The AAFC was the second American professional sports league ( the first being the third American Football League ) to have its teams play in a double round robin format in the regular season : each team had a home game and an away game with each of its AAFC fellow foes .
All-America Football Conference