Eric and Sharon Waller's homebred Stronghold (Ghostzapper) shipped from trainer Phil D'Amato's Southern California base to Sunland Park in New Mexico and will return home with 20 additional qualifying points to the GI Kentucky Derby after his two-length victory in the GIII Sunland Park Derby Sunday. Second behind Nysos (Nyquist) in the Nov. 19 GIII Bob Hope S., Stronghold earned five Derby points when he was last seen finishing second in his two-turn debut in the Dec. 16 GII Los Alamitos Futurity. Sent off the 6-5 favorite in his sophomore...