St Nicholas Abbey was reported to have had "a comfortable night" ahead of surgery on a fractured pastern which was to be performed this morning.

The six-times Group One winner suffered the injury during a routine gallop at Aidan O'Brien's Ballydoyle stables on Tuesday morning as he was being prepared for the King George VI And Queen Elizabeth Stakes at Ascot on Saturday.

With his racing career now over due to the seriousness of the injury, owners John Magnier, Michael Tabor and Derrick Smith are hopeful their vets can save him for a stud career.