Question: how many times has a nfl teams lost every game
Answer: The antithesis of a perfect season , this ignominy has 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 , thirteen times in top - level rugby league , at least twice in top - level rugby union , and twice in English county cricket .