their first 20 seasons
... that the New Orleans Saints went their first 20 seasons without a winning season?
... that the <a href="./New_Orleans_Saints" id="mwBBY" rel="mw:WikiLink" title="New Orleans Saints">New Orleans Saints</a> went <b id="mwBBc"><a href="./List_of_New_Orleans_Saints_seasons" id="mwBBg" rel="mw:WikiLink" title="List of New Orleans Saints seasons">their first 20 seasons</a></b> without a <a href="./Winning_percentage" id="mwBBk" rel="mw:WikiLink" title="Winning percentage">winning season</a>?