Professional teams in all major sports in the U.S. operate as franchises within a league, meaning that a team may move to a different city if the owners believe financial benefit, but franchise moves are usually subject to some form of league-level approval. All major sports leagues use a similar type of regular season schedule with a playoff tournament after the regular season ends. In addition to the major league-level organizations, several sports also have professional minor leagues, active in smaller cities across the country.