The Tattersalls Cheltenham Festival Sale, which takes place after racing at Prestbury Park on Thursday, has the highest profile among the expanding market of boutique jumping sales and takes a break from the norm by offering a mare entered to run at the Festival on Friday. Traditionally, the auction has offered winning point-to-pointers and bumper horses with the potential to be stars of the future, as Grade 1-winning graduates such as Bravemansgame (Fr), Gerri Colombe (Fr), Santini (GB) and Slate House (Ire) have demonstrated. However, there could be a much...