Of the 25 stallions to enter stud in Kentucky in 2013, 16 (or about three-fifths of the group) were Grade 1/Group 1 winners – and, rightfully, they attracted stellar books. Two years later, the resulting foals are adding spice to a resurgent yearling market. Among that standout group of Kentucky’s first-year yearling sires, The Factor was the breakout success story of the August Fasig-Tipton Saratoga selected yearling sale, the first boutique auction of the yearling calendar. The stallion now gets another chance to prove himself at the bellwether Keeneland September yearling sale, which tests a wide swath of the market across two weeks.