Superstar jockey Frankie Dettori rode first public race on `` Sylvia '' , aged 10 . Father sent him to Britain to work as an apprentice for trainers Luca Cumani . He was later apprenticed by trainer John Gosden at his stables in Newmarket and then moved into the stable of Sir Michael Stoute-Mares. Fought back after plane crash to win all major races , including Derby in 2007 .
Superstar jockey Frankie Dettori rode first public race on `` Sylvia '' , aged 10 . Father sent him to Britain to work as an apprentice for trainers Luca Cumani . Famed sealed with `` Magnificent 7 '' victory at Ascot , September 1996 . Fought back after plane crash to win all major races , including Derby in 2007 .