DONCASTER, UK—Having seen their rivals open up with two booming aces—graduates of the Tattersalls Craven Sale won both the big Classic trials at Newmarket last week—the Goffs UK Doncaster Breeze-Up returned serve at the weekend with an equally timely advertisement for the auction staged here on Thursday. First and foremost, of course, the G3 Greenham S. success of Perfect Power (Ire) (Ardad {Ire}) was another win for the whole breeze-up sector, reiterating consignors' ability not just to showcase precocity and professionalism, but to lay a foundation for continued development. At...