Olympic sprint gold medalist Sherone Simpson is to appeal her doping suspension . The ban is backdated to last June , which means Simpson would be able to return to competition this December . Simpson 's agent Paul Doyle calls the 18-month ban ` ` incredibly unjust '' Simpson tested positive for banned stimulant oxilofrine at last year 's Jamaican trials . A ruling in the favour of fellow Jamaican athlete Ashley Powell is expected on Monday .
Olympic sprint gold medalist Sherone Simpson is to appeal her doping suspension . Simpson 's agent Paul Doyle calls the 18-month ban ` ` incredibly unjust '' Simpson tested positive for banned stimulant oxilofrine at last year 's Jamaican trials . A ruling in the favour of fellow Jamaican athlete Ashley Powell is expected on Monday .