Triple champion unchanged in betting Three-time champion hurdler Istabraq remains the clear 13-8 favourite with Coral to retain his crown next March.The move follows the narrow win by the Aidan O`Brien-trained star at Leopardstown yesterday.Landing Light and Valiramix are the 9-2 joint second favourites with Coral to defeat the Irish hero.Coral spokesman David Stevens said: 'Although he recorded the narrowest of wins, Istabraq remains the one they all have to beat at Cheltenham in March, and his genius of a trainer is sure to have him spot on as he bids for the record fourth win.'SMURFIT CHAMPION HURDLE:Coral betting: 13-8 Istabraq, 9-2 Valiramix, Landing Light, 14-1 Jair Du Cochet, Bilboa, Arctic Owl, 16-1 Ned Kelly, 20-1 Azertyuiop, Ansar, Geos, 25-1 Hors La Loi III, Westender, 33-1 Grimes, Marble Arch, Dark Shell, Regal Exit, 40-1 bar.