Grandouet - Champion doubt© Photo Healy Racing
Sky Bet are among several leading bookmakers to have suspended betting on next month's Stan James Champion Hurdle at the Cheltenham Festival.
The ante-post market for the blue riband contest has been suspended amid rumours that Grandouet could miss the race for the hurdling crown.
Paddy Power and Coral are other firms to have suspended the market while Ladbrokes have withdrawn the Nicky Henderson-trained runner from their ante-post list.
As yet, there has been no confirmation of the rumours.
