the only club to have beaten all 91 other clubs
... that Port Vale F.C. is the only club to have beaten all 91 other clubs in the top four divisions of the current English football league system in a competitive league fixture?
... that <a href="./Port_Vale_F.C." id="mwBjQ" rel="mw:WikiLink" title="Port Vale F.C.">Port Vale F.C.</a> is <b id="mwBjU"><a href="./Port_Vale_F.C._league_record_by_opponent" id="mwBjY" rel="mw:WikiLink" title="Port Vale F.C. league record by opponent">the only club to have beaten all 91 other clubs</a></b> in the top four divisions of the current English football league system in a competitive league fixture?