ARCADIA, Calif.—Star of Africa, a 4-year-old filly, died Oct. 31 from a training injury suffered at Santa Anita Park on the last day of the fall racing season, officials announced. Star of Africa had 16 starts and three first-place finishes in her career. She was owned by Eclipse Thoroughbred Partners and trained by Patrick Gallagher. The jockey as of her last start was Abel Cedillo. Star of Africa was the fourth horse to die from a racing or training injury during the fall season at Santa Anita. Additionally, Seven Summers, a 2-year-old unraced filly, died from a training injury on Sept. 30, one day before the season began, according to the California Horse Racing Board (CHRB). And Electric Ride, a 2-year-old filly whose two career starts included one win and one second-place finish, died Oct. 16. Her cause of death is listed as non-musculoskeletal sudden death, with the CHRB also noting …