Input (grade 13): The club began play in 1960 as a charter member of the American Football League, and spent its first season in Los Angeles, California before moving to San Diego in 1961.
Output (grade 9): They were first called the Los Angeles Chargers, the team was started in 1960 as a charter member of the American Football League. The club spent its first season in Los Angeles, California before moving to San Diego in 1961.