American Pharoah's little sis got one up on her brother July 31.
Unlike her Triple Crown-winning sibling, Zayat Stables' homebred American Cleopatra won her debut at Del Mar.
Off at a 7-1, with Bob Baffert stablemate Jeweled taking heavy betting action at 4-5 in the field of eight, the 2-year-old daughter of Pioneerof the Nile, out of Littleprincessemma, stalked early leader War Factor, blew by in the turn, and pulled away in the stretch to win by two lengths in the 5 1/2-furlong maiden special weight event.