Giacomo, upset winner of the 2005 Kentucky Derby (gr. I), has been retired to Frank Stronach's Adena Springs Farm near Midway, Ky. The 4-year-old son of Holy Bull will stand for a live foal fee of $12,500.A homebred racing for Jerry and Ann Moss and trained by John Shirreffs, Giacomo won three of 16 career starts, with two seconds, and five third-place finishes while earning $2,537,316. "Giacomo is a perfect fit for the Adena Springs program," Stronach said. "He was a grade I horse as a 2-year-old, Kentucky Derby winning 3-year-old, and grade II winning 4-year-old. He showed a consistency at the highest level that is rarely seen today, qualities that we highly value in a stallion. He also offers breeders significant outcross value as well."In addition to winning the Derby, Giacomo finished third in the Preakness Stakes (gr. I) at age 3. This year, he won the San Diego Handicap (gr. II), ran third in the Strub Stakes (gr. II), and finished third in the Goodwood Breeders' Cup Handicap (gr. II) previous to running fourth in the Breeders' Cup Classic Powered by Dodge (gr. I).