Sahara Slew ruled out of Oaks Ribblesdale Stakes winner Sahara Slew has suffered a setback and will miss the Kildangan Stud Irish Oaks at the Curragh on Sunday week.Her trainer John Oxx confirmed today that the filly, who showed dramatic improvement to land the Group Two prize at Royal Ascot, will now be rested and brought back later this season.'It`s nothing serious but the Irish Oaks has come at the wrong time and she won`t be ready,' Oxx explained.'She will run again later in the year.'Her absence from the race strengthens the chances that Aidan O`Brien`s Imagine, already the winner of the Irish 1000 Guineas and the Vodafone Oaks at Epsom, could claim a third Classic prize.Oxx also had news of Pugin, the colt who led the Budweiser Irish Derby for a long way on Sunday and eventually finished fourth.He is to be aimed at either the Rothmans Royals St Leger at Doncaster on September 15th or the Irish equivalent at the Curragh on the same day.'He had a great run in the Derby,' said Oxx. 'And I`m hopeful he will be a Leger type.'