A capacity field of 20 plus three emergencies has been declared for Adelaide's premier open sprint, the A$1 million Goodwood.

Last year's winner Black Heart Bart and the Peter Gelagotis-trained Malaguerra head the field with 59 kilograms and have drawn barriers two and nine respectively in the 1200-metre race at Morphettville on Saturday.

Secret Agenda, who won Adelaide's first A$1 million race, the Robert Sangster Stakes at Morphettville on May 6, will jump from barrier five while local galloper Riziz has drawn barrier one with Illustrious Lad drawing widest in 23.