The Aidan O'Brien-trained Gstaad has been supplemented back into the Betfred 2,000 Guineas at Newmarket at a cost of £30,000. Along with Albert Einstein, he had been incorrectly scratched from the race earlier this month due to an administration error. While Albert Einstein remains an absentee, Gstaad is one of four Ballydoyle contenders in contention at Monday's confirmation stage, with dual Group 1 winner Puerto Rico, Causeway and Flushing Meadows also on the list of 20 colts still in the mix. On his Guineas squad, O'Brien said, "The current thinking...