The stg£250,000 winner’s prize for the William Hill English Greyhound Derby has lured so many entries the first stage will have to be run over four nights rather than the usual three.

PATSY Byrne’s Ballymac Ruso is the 2-1 favourite to win the Boylesports International at Dundalk on Sunday following College Causeway’s withdrawal shortly before the draw was made by Boylesports’ representative Leon Blanche at lunchtime yesterday.