San Francisco 49ers
The team was founded in 1946 as a charter member of the All-America Football Conference (AAFC) and joined the NFL in 1949 when the leagues merged. The 49ers were the first major league professional sports franchise based in San Francisco. The name "49ers" comes from the prospectors who arrived in Northern California in the 1849 Gold Rush. The team is legally and corporately registered as the San Francisco Forty Niners. The team began play at Kezar Stadium in San Francisco before moving across town to Candlestick Park in 1970 and then to Levi's Stadium in Santa Clara in 2014.
2014 Pac-12 Conference football season
California and Oregon faced off in a game at the newly built Levi's Stadium in Santa Clara, California, home of the San Francisco 49ers as well as the new home of the Pac-12 Football Championship Game at least until the 2016 season. The game was officially considered a home game for Cal because of the stadium's proximity to the Golden Bears' home base at Berkeley, however due to the proximity to the Ducks's home of Eugene and the large number of Oregon alumni who live in the Bay Area, the stadium was seen as a neutral location.