Why do the San Francisco 49ers play in Santa Clara, California?
The San Francisco 49ers originally played at Kezar Stadium in San Francisco before moving to Candlestick Park in 1971.  When negotiations to build a new stadium fell apart they worked with the city of Santa Clara to build a new stadium which was located next to their training facilities.  Because of brand recognition and close proximity, the decision was made to keep the name, San Francisco 49ers.