Shackleford Filly Fastest At Fourth OBS June Sale Under Tack Session Sponsored by: Hip 573, a Shackleford filly, works a quarter in :20 3/5 seconds at the OBS June Under Tack Show. Hip No. 573, a daughter of Shackleford consigned by Navas Equine, worked a quarter in :20 3/5 to post the fastest work at the distance at the fourth session of the Under Tack Show for Ocala Breeders' Sales Company's 2021 June Sale of 2-Year-Olds and Horses of Racing Age. The bay filly is out of Moondancer, by Cuvee, from the family of grade one stakes winner Kitten's Dumplings. Hip No. 637, a chestnut filly by Fed Biz consigned by Omar Ramirez Bloodstock, Agent, turned in a quarter in :21 flat. She's out of Phantom Phasr, by Ghostzapper, from the family of Grade 1 winner Schossberg.