A winless season is a regular season in which a sports team fails to win any of its games. The antithesis of a perfect season, winless seasons have been suffered twelve times in professional American football, six times in arena football, three times in professional Canadian football, once each in American professional lacrosse and box lacrosse, more than twenty-five times in major Australian football leagues, over twenty times in top-level rugby league, at least twice in top-level rugby union, and twice in English county cricket.