Invincible Spirit (Ire), the sire of 22 individual Group 1 winners worldwide, has been retired from covering duties, the Irish National Stud announced on Wednesday. Now 27, Invincible Spirit was a fixture on the Irish National Stud roster of stallions for 22 consecutive seasons, starting in 2003 after his breakthrough Group 1 victory in the Sprint Cup at Haydock the previous autumn. As a racehorse he won seven of his 17 starts for trainer John Dunlop and owner-breeder Prince Faisal, with his other wins including the Duke Of York Stakes...