Jet Ski Lady
... that despite starting as a 50-to-1 longshot, the filly Jet Ski Lady won the 1991 Epsom Oaks by ten lengths, the second widest winning margin in the race's history?
... that despite starting as a <span about="#mwt16" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"50-to-1"}},"i":0}}]}' id="mwAQg" typeof="mw:Transclusion">50-to-1</span> longshot, the filly <b id="mwAQk"><a href="./Jet_Ski_Lady" id="mwAQo" rel="mw:WikiLink" title="Jet Ski Lady">Jet Ski Lady</a></b> won the 1991 <a href="./Epsom_Oaks" id="mwAQs" rel="mw:WikiLink" title="Epsom Oaks">Epsom Oaks</a> by ten <a href="./Horse_length" id="mwAQw" rel="mw:WikiLink" title="Horse length">lengths</a>, the second widest winning margin in the race's history?