Constitution River, this year's French Derby and Eclipse winner, has been retired from racing and will stand at Coolmore from 2027 after a tendon problem was found during a routine end-of-season veterinary check. The news was announced on Friday. Aidan O'Brien's colt was found to have a lesion on his left front tendon during the evaluation, which the Ballydoyle trainer says is carried out on every horse at the end of each year. With no guarantee that the colt would be ready f