French racing authority bans Frankie Dettori for six months over positive drug test . Jockey accepts the decision and promises to protect his reputation when he returns . One of five regrets having let down his family and fans , Dettori 's lawyer says . He will have to undergo further testing before he can start racing again in May .
French racing authority bans Frankie Dettori for six months over positive drug test . Jockey accepts the decision and vows to rebuild his reputation when he returns . Father of five regrets having let down his family and fans , Dettori 's lawyer says . He will have to undergo further testing before he can start racing again in May .