LEXINGTON, Ky. – Goncalo Torrealba, longtime owner of the Brazilian operation Stud TNT, has been collecting high-priced mares for a new breeding venture with his family, Borges Torrealba Holdings. He added a jewel to his new American broodmare band Wednesday when he paid $4.5 million for two-time Grade 1 winner Pure Clan. That was Wednesday’s highest price and the highest after two days of selling at Keeneland’s November breeding stock sale, which runs through Nov. 16.