Caulfield Cup
In the 2012 Caulfield Cup, Williams rode Dunaden to an unprecedented victory. A few days before the race Dunaden had drawn the outside barrier (barrier 22, although after scratchings it became barrier 18), and was also the top weighted horse for the race, carrying 58 kg. Dunaden had subsequently drifted in the betting odds, as no horse had ever won the Caulfield Cup from wider than barrier 15, nor carrying top weight. The win also made it back-to-back Caulfield Cup victories for Williams. In 2019, Williams rode Vow and Declare to win the Melbourne Cup in his 15th start in the race.