"A victory for small breeders!" That was the emphatic verdict from an emotional Muriel Knox after her family had topped Tuesday's opening session of the Goffs UK Doncaster Premier Yearling Sale with their homebred Havana Grey (GB) filly for £240,000. Mark McStay's Avenue Bloodstock struck the winning bid on behalf of Skara Glen Stables. Lot 157 might have been consigned by Sarah Fanning Sales, but it's fair to say that this was a Knox filly through and through with Miss Mercy (Ire) (Law Society) as her fourth dam, a mare...