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.
FirstEnergy Stadium
Since 2011, the stadium has been referred to by some as the "Factory of Sadness", a name that was first coined that year by comedian and Browns fan Mike Polk. Polk made a video outside the stadium in which he complains about the team's futility. Through the 2017 season, FirstEnergy Stadium is one of two NFL venues that have yet to host a postseason game of any kind, the other being Mercedes-Benz Stadium, which opened in 2017 and is scheduled to host Super Bowl LIII in February 2019. The Browns are one of five teams who have yet to host a home playoff game in their respective stadium, along with the Atlanta Falcons, San Francisco 49ers, Detroit Lions, and New York Jets. The latter three teams, however, have hosted the Super Bowl at their respective stadiums, while the Jets' home, MetLife Stadium, has also hosted a New York Giants home playoff game.