NEWMARKET, UK-Book 1 of the Tattersalls October Yearling Sale drew to a close in Newmarket on Thursday with a record aggregate and a much-improved year-on-year clearance rate, and an average and median that were largely on par with 2017 figures. At the close of three days' trade, 392 yearlings were traded from 456 offered for 106,503,000gns, up 4% from last year when 349 were sold for 102,290,000gns. The clearance rate was up to 86% from 79%-the highest at this sale in more than a decade. The median climbed slightly (2%)...