See Article / Thursday, February 12, 2026 / Categories: Equestrians Shirreffs, Trainer of Zenyatta, Dies at Age 80 John Shirreffs, who trained Zenyatta to a Hall of Fame career and saddled Giacomo to win the 2005 Kentucky Derby (G1), died in his sleep Feb. 12 at his home in Arcadia, Calif. He was 80. Previous Article Grande to Make First Start Since Kentucky Derby Scratch Next Article Mesquite Off KY Derby Trail, Future Wagering Suspended Print 5 Rate this article: No rating Please login or register to post comments.