Five horses have been supplemented to Book 1 of next month's Keeneland September Yearling Sale in Lexington, officials at the auction house have announced. All five are colts, including sons of Into Mischief, Vekoma and Yaupon and two youngsters from the final crop of Uncle Mo. All are being consigned by Taylor Made Sales Agency as agent and will be offered Sept. 14 and 15. Hip 182, a colt by Yaupon out of Rise Above (Violence), a half-sister to GISW Twilight Eclipse and GSW Grand Contender; Hip 183, an Uncle Mo colt out of Positively Royal (Bernardini), the dam of SP Roman Empire; Hip 374, the first foal out of Lafertiti (Pioneerof the Nile), a colt by the late Uncle Mo hailing from the family of Grade I winners Bast and Fault; Hip 375, an Into Mischief son of Grade III-placed Golden Domer (Quality Road), whose female family includes GI Kentucky Derby hero Mine That Bird and fellow Grade I winner Dullahan; Hip 376, a colt by Vekoma and the first produce from August Bloom (Arrogate), a half-sister to Grade II winner Faypien With the supplements, a total of 4,640 horses are cataloged to the September Sale, which will be conducted across 12 sessions through Saturday, Sept. 26.The post Five Horse Supplemented To Keeneland September Book 1 appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.