NEWMARKET, UK--Like a cyclist who has been struggling into a bitter headwind, only to find himself suddenly towed along by the slipstream of a juggernaut, Book 3 of the Tattersalls October Yearling Sale opened with all the startling momentum achieved, against every temperate expectation, in Book 2. Once again, the masks around the ring concealed gapes of incredulity as a brisk trade maintained all indices almost precisely in step with the returns last year, when the wider world was so very different a place. Aggregate turnover of 5,092,700gns, through the...