A pair of yearlings–a colt by Yaupon and a filly by Tapit–have been supplemented to Book 1 of the Keeneland September Yearling Sale. Added to the auction's opening day Sept. 14 is hip 184, a son of Yaupon out of Dame Iris (Medaglia d'Oro). The mare is a half-sister to multiple group winner Spanish Mission (Noble Mission) and the yearling is consigned by Hunter Valley Farm. Supplemented to the second session is hip 377, a daughter of Tapit consigned by Gainesway. Out of multiple stakes winner Queen Caroline (Blame), the filly is a half-sister to champion and multiple Grade I winner Forte (Violence).With these supplements, a total of 4,642 horses have been cataloged to the September sale, which runs 12 sessions through Sept. 26.The post Half-Sister to Champion Forte One of Two Added to Keeneland September Book 1 appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.