Grand National hope Comply Or Die is 10-1 from 11-1 with totesport on the eve of the John Smith’s meeting. The three-day fixture begins with a big jackpot rollover of £137,627 after the bet was not won at Catterick today. Spokesman Damian Walker said: “We expect well over £1/4million in the jackpot pool for Thursday and there’s a possibility of the bet approaching the magic million on Saturday if it rolls over from the first two days.”

Compare Grand National OddsCompare the latest betting odds on the 2010 Grand National

Grand National Betting OffersView the latest bookmakers offers and free bets for the National

Bookmakers ComparisonCompare bookmakers offering online betting for the Grand National