The horse will be saddled by Joseph Patrick O'Brien, who trains at Owning Hill in County Kilkenny. O'Brien's yard has already sent out 160 winners this season, which tells you the operation is in serious form and knows how to get horses ready to win. The trainer has the reputation and the track record to have Joyous Heart properly prepared for this debut, but as with any first-time runner, there will be an element of genuine mystery about how the horse will handle race conditions and the demands of competition. That is what makes a debut interesting — everything is yet to be proven.