Racing: Black Jack Ketchum will not make his handicap bow at Haydock on Saturday after an unsatisfactory blood test.
Jonjo O'Neill's unbeaten seven-year-old was set to take his chance in the Betfair Handicap Hurdle, in which he would have had to carry 11st 12lb.
The ante-post favourite for the Ladbrokes World Hurdle will instead be primed for the Ballymore Properties Long Distance Hurdle at Newbury on November 25.
O'Neill told the Racing Post: "Black Jack Ketchum will not run at Haydock on Saturday as unfortunately, his blood has not quite tested right.
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"Hopefully, he will be okay to run at Newbury the following week."