Aidan O’Brien’s massive Derby favourite sees odds skyrocket as stablemate ‘pulls away’ at head of market for £1.5m race

AIDAN O’BRIEN’S massive Derby favourite The Lion In Winter is a huge drifter in the market.

And stablemate Delacroix has replaced him amid a staggering surge of bets – with another O’Brien runner being backed too.

GettyThe Lion In Winter, the long-time favourite for the Derby, is a huge drifter in the market[/caption]

Acomb Stakes winner The Lion In Winter – who flopped in key trial the Dante at York – was out to a huge 11 (10-1) on the Betfair Exchange at the time of writing.