We’ve had a massive build-up to the Darley Classic thanks to the emergence of a new star sprinter in Chautauqua and the controversy of both the Manikato Stakes and the barrier manners of the Irish sprinter Slade Power. Chautauqua is a warm favourite with the bookies, but is still an overlay on our assessments as you’ll find out in this quick audio preview: And here is a chart of the best 1200m speed ratings since we developed our own measurements. So please note that we are not saying that Black Caviar is inferior to these horses. The chart uses data from the dates we have available for these ratings in our database. Click to enlarge. Aussie-smaller