Team Logo. The San Francisco Demons were a team in the XFL. They had the highest average attendance despite having the smallest stadium in the league. They folded after losing in the championship game. Retrieved from "https://prosportsteams.fandom.com/wiki/San_Francisco_Demons?oldid=17520" Categories: XFL teams Teams in California Teams in San Francisco Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.