inners ▁of ▁the ▁Prix ▁du ▁J ockey ▁Club . ▁J em ▁Robinson ▁was ▁app r entic ed ▁at ▁the ▁stable ▁of ▁Robert ▁Rob son ▁at ▁New market ▁where ▁he ▁remained ▁for ▁th ir teen ▁years ▁and ▁he ▁was ▁trained ▁in ▁race ▁r iding ▁by ▁Frank ▁Buck le . ▁ ▁R iding ▁career ▁Robinson ▁developed ▁a ▁r iding ▁style ▁which ▁saw ▁him ▁employ ▁a ▁low , ▁cr ouch ing ▁post ure , ▁especially ▁in ▁a ▁finish . ▁This ▁was ▁closer ▁to ▁the ▁modern ▁style ▁introduced ▁to ▁England ▁by ▁American ▁rid ers ▁such ▁as ▁Tod ▁Slo an ▁at ▁the ▁end ▁of ▁the ▁century ▁and ▁in ▁contrast ▁to ▁most ▁j ock e ys ▁of ▁the ▁time ▁who ▁t ended ▁to ▁sit ▁" bol t ▁u pr ight ". ▁Even ▁by ▁the ▁standards ▁of ▁his ▁time , ▁Robinson ▁made ▁frequent ▁and ▁vig orous ▁use ▁of ▁the ▁wh ip , ▁leaving ▁some ▁of ▁his ▁mount s ▁ble eding . ▁One ▁horse ▁named ▁Ar d ross an ▁was ▁so ▁affected ▁that ▁he ▁later ▁attacked ▁Robinson ▁on ▁the ▁training ▁gal lo ps ▁and ▁the ▁j ockey ▁narrow ly ▁escaped ▁serious ▁injury . ▁ ▁Robinson ▁recorded ▁his ▁first ▁major ▁win ▁when ▁he ▁won ▁the ▁ 1 8 1 7 ▁Derby ▁on ▁Az or , ▁a ▁horse ▁who ▁had ▁been ▁entered ▁in ▁the ▁race ▁to ▁make ▁the ▁pace ▁for ▁a ▁more ▁f anci ed ▁stable ▁companion . ▁In ▁ 1 8 2 4 ▁he ▁won ▁both ▁the ▁Derby ▁( on ▁C ed ric ) ▁and ▁the ▁O aks ▁St akes ▁( on