In this week's history lesson, we look at Green Bay's history against the San Francisco .
Green Bay's history against the San Francisco 49ers goes back to 1950. In that year, the 49ers entered the NFL as a result of the NFL's merger with the All-America Football Conference (the other two teams that joined the NFL in the merger were the Cleveland Browns and Baltimore Colts. That version of the Colts folded after just one year in the NFL but the Browns are still around - after a move to Baltimore and a rebirth in 1999).