The Baltimore Colts were a professional American football team based in Baltimore, Maryland. The first team to bear the name, it was a member of the All-America Football Conference (AAFC) from 1947 to 1949 and then joined the National Football League (NFL) for one season before folding. The Colts were one of the least successful teams in the AAFC and NFL both on and off the field, winning only 11 of their 54 games in their history. In 1953, Baltimore was granted an expansion team that revived the Colts name. That franchise moved in 1984 and became the Indianapolis Colts.

American football, also known as gridiron football, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with possession of the oval-shaped football, attempts to advance down the field by running with the ball or throwing it, while the defense, the team without possession of the ball, aims to stop the offense's advance and to take control of the ball for themselves. The offense must advance at least ten yards in four downs or plays; if they fail, they turn over the football to the defense, but if they succeed, they are given a new set of four downs to continue the drive. A game is won by the team with the higher number of points, which are scored primarily by advancing the ball into the opposing team's end zone for a touchdown or kicking the ball through the opponent's goalposts for a field goal.