Team Logo. The Kansas City Athletics were a team in Major League Baseball. They played in the American League. In 1968, they moved to California and became the Oakland Athletics. Retrieved from "https://prosportsteams.fandom.com/wiki/Kansas_City_Athletics?oldid=16208" Categories: Former MLB teams Teams in Missouri Teams in Kansas City (MO) Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.