Zac Purton will be still riding high after his Royal Ascot win during the week and today he can upset the favourites in the Jockey Challenge.
The Australian's King's Stand Stakes victory on Little Bridge was a career highlight for Purton, who can create a personal best for wins in a season with a single success today.
His 54th win for the term could come early with Paul O'Sullivan's Mount Victory in the opening event, and he has some strong chances sprinkled among his nine-ride book.
Mount Victory drops into Class Five for the first time, has drawn well in one and races over a suitable 1,800m.
Topping the betting ahead of Purton, a $4.25 third favourite last night, are perennial market leaders Douglas Whyte ($2.85) and Brett Prebble ($3.20).
Purton has a strong start to the meeting, after Mount Victory he rides two well-fancied runners in races two and three - Africa Light and Sharema Feeling.