Champion
... that in 1800, Champion became the first racehorse to win both the Derby and the St. Leger Stakes?
... that in 1800, <b id="mwCXo"><a href="./Champion_(horse)" id="mwCXs" rel="mw:WikiLink" title="Champion (horse)">Champion</a></b> became the first racehorse to win both the <a href="./Epsom_Derby" id="mwCXw" rel="mw:WikiLink" title="Epsom Derby">Derby</a> and the <a class="mw-redirect" href="./St._Leger_Stakes" id="mwCX0" rel="mw:WikiLink" title="St. Leger Stakes">St. Leger Stakes</a>?