Simplify the following text for a Grade 8 native English-speaking person.
Original: 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 .
Simplified: 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 .