Superstar California Chrome has warmed up for his final start with a 12-length win at his local track at Los Alamitos.

California Chrome has made a winning comeback in the San Diego Handicap, his first start since his Dubai World Cup triumph.

California Chrome has firmed to win the World Cup after a comfortable victory in his lead-up race at Meydan in Dubai.

The racing future of California Chrome is in doubt with the four-year-old sidelined for the rest of the year with a leg injury.

American horse California Chrome will have a gallop on the Ascot course before he runs in the Prince of Wales's Stakes at the Royal meeting.