Yster Charles "Chet" Soda (1908–1989) was an Oakland, California businessman who was the first general partner of the Oakland Raiders, an original franchise in the American Football League (AFL, 1960–1969). Soda was one of eight partners in the franchise, others including F. Wayne Valley and Donald Blessing. Soda was allegedly the source of the team's original name, the "Oakland Senors;" although Soda himself professed to prefer to name the team the "Oakland Mavericks." Whoever named the team apparently chose "Senors" as an inside joke reference to Soda, who was known for referring to his associates as "señor." The new name was subject to much ridicule in the press, with particular attention given to the misspelling of the plural of "señor" and to the lack of a tilde over the "n", and was overruled less than two weeks after it had been announced. Soda's involvement in the team was short-lived; almost immediately, Valley bought out his partners' shares in the franchise.
- "Grid Team Named-- They're Senors", Oakland Tribune, April 5, 1960, p37. Soda said, "My own personal choice would have been Mavericks, but I believe we came up with a real fine name." The selection committee narrowed the choices down to Admirals, Lakers, Diablos, Seawolves, Gauchos, Nuggets, Señors, Dons, Costers, Grandees, Sequoias, Missiles, Knights, Redwoods, Clippers, Jets and Dolphins.
- "Now It's Hi, Raiders! (Bye, Senors)", Oakland Tribune, April 14, 1960, p1