Surplice
... that in 1848, Surplice became the first racehorse to win both the Derby and the St. Leger Stakes since 1800?
... that in 1848, <b id="mwBXI"><a href="./Surplice_(horse)" id="mwBXM" rel="mw:WikiLink" title="Surplice (horse)">Surplice</a></b> became the first racehorse to win both the <a href="./Epsom_Derby" id="mwBXQ" rel="mw:WikiLink" title="Epsom Derby">Derby</a> and the <a class="mw-redirect" href="./St._Leger_Stakes" id="mwBXU" rel="mw:WikiLink" title="St. Leger Stakes">St. Leger Stakes</a> since 1800?