Onion
... that the thoroughbred horse Onion never won another stakes race after his upset defeat of Secretariat in the 1973 Whitney Handicap?
... that the <a href="./Thoroughbred" id="mwESs" rel="mw:WikiLink" title="Thoroughbred">thoroughbred</a> horse <b id="mwESw"><a href="./Onion_(horse)" id="mwES0" rel="mw:WikiLink" title="Onion (horse)">Onion</a></b> never won another <a href="./Graded_stakes_race" id="mwES4" rel="mw:WikiLink" title="Graded stakes race">stakes race</a> after his upset defeat of <a href="./Secretariat_(horse)" id="mwES8" rel="mw:WikiLink" title="Secretariat (horse)">Secretariat</a> in the 1973 <a class="mw-redirect" href="./Whitney_Handicap" id="mwETA" rel="mw:WikiLink" title="Whitney Handicap">Whitney Handicap</a>?