Adam Kirby's yard at Kirtling in Newmarket has already sent out 6 winners this season, so there is form in the stable. That does not guarantee anything for Jenny Rae—every horse is different—but it suggests the team knows how to get a young runner ready. With no racecourse experience to lean on, this debut will tell us everything: whether the horse is quick enough to compete, whether it handles the noise and excitement of racing, whether the work done at home translates to the real thing. First races are always a mystery, but they are also the most honest test there is.