Book’em, among the fastest 2-year-old fillies of 2024, fractured sesamoids while breezing Jan. 6 at Fair Grounds and, owing to the extent of her injury, subsequently was euthanized, trainer Bret Calhoun said Sunday. Calhoun had planned to launch Book’em’s 3-year-old season on Jan. 18 in the Silverbulletday Stakes at Fair Grounds. Instead, he has a hole in his stable and a heavy heart. “You hate for something like that to ever happen, but right now, I had one good horse, and it was her,” Calhoun said. Book’em was working five furlongs after the renovation break when she injured herself turning into the homestretch of her breeze. “Just a routine work and she pulled up. She’s a horse who’d always been healthy,” Calhoun said. Book’em, a Tiz the Law filly campaigning for Kirk Kat and Wayne Sanders, debuted finishing second in a short sprint this past June, then won three straight, the last of them a one-turn-mile Churchill Downs allowance that yielded an 89 Beyer Speed Figure, among the fastest figures in her division last year. :: Want to learn more about handicapping and wagering? Check out DRF's Handicapping 101 and Wagering 101 pages.