LEXINGTON, Ky. (AP) — Keeneland says a 2.5% fractional interest in Breeders’ Cup Classic champion Flightline has sold for $4.6 million during a special auction before the start of its November Breeding Stock Sale. Brookdale Farm’s Freddy Seitz signed the ticket for an undisclosed client, the track announced in a release on Monday. The sale comes a day after ownership of the 4-year-old son of Tapit retired the unbeaten colt following his record 8¼-length victory in Saturday’s $6 million, Grade 1 Classic at Keeneland.