Aidan O`Brien has given Giant`s Causeway the go-ahead to run in Saturday`s ESAT Digifone Champion Stakes at Leopardstown following a work-out this morning.
Known as the 'iron horse' after winning four Group One races in the space of nine weeks this summer, the colt was among seven horses left in the Group One contest at today`s final declaration stage.
The three-year-old deputises for his owners` Montjeu who is set to run at Longchamp on Sunday instead.
O`Brien said: 'The horse did a nice canter and he`s well.
'The horse is heavier than ever but that`s the way it`s been with him since he started to improve so much.
'It`s down to whether I`ve got it right - the easy way would have been not to run.
'He`ll hardly get the chance to run in Ireland again and it`s a very important race at home.'
O`Brien also has Apollo Victoria and Manhattan in the 10-furlong contest.
'The idea with Manhattan and Apollo Victoria in the race is that they go an even pace and that should be fair to everyone,' O`Brien added.
'Then let the best horse win on the day.'
Michael Kinane will ride Giant`s Causeway with Seamus Heffernan on Manhattan and Pat Scallan aboard Apollo Victoria.
A truly international field lines up against Giant`s Causeway.
Main danger appears to be Godolphin`s Best Of The Bests, the impressive winner of the Prix Guillaume d`Ornano at Deauville and the mount of Frankie Dettori.
Sir Michael Stoute runs Greek Dance (Johnny Murtagh), who won the Grosser Dallmayr-Preis at Munich last time out.
Germany will be represented by the Peter Schiergen-trained Sumitas (Terry Hellier), who chased home Greek Dance in Munich and was also second to Dubai Millennium in the Prince Of Wales`s Stakes at Royal Ascot.
And French trainer Andre Fabre runs Indian Danehill (Olivier Peslier), who beat Greek Dance in the Prix Ganay earlier in the season.
The going at Leopardstown is described as good.