Aidan O'Brien has three runners in Saturday's Racing Post Trophy at Doncaster - as he goes for an eighth triumph in the final Group One race of the season in Britain.
Century would appear to be his number one hope, ahead of Buonarroti and Johann Strauss, after being supplemented following a debut success at the Curragh just two weeks ago.
"We're very happy with Century. Obviously he's had just the one run but ran a nice race and won nicely. He was a bit green, slowly away, but he came through the field and learned plenty," said the Ballydoyle trainer.
"He finished really well. Joseph just gave him a chance after being slowly away but he found his way through them.
"We gave him time and there were others to get out before him. He was always doing his half-speeds nicely all through the summer.
"He was always a definite possible for this if his maiden went well, we always had one eye on it from a while back.
"Buonarotti had a nice run first time in Galway, finished fourth, and then he improved a good bit to win his maiden at Tipperary and the horse that was second to him won on Wednesday.
"Johann Strauss is a horse we always thought a lot of. He was very babyish in his first race at Newmarket where he ran a nice race and was then just beaten at Naas but he came forward. He's a horse we've always felt was very smart.
"The mile should suit him. He was very babyish at Newmarket and obviously he learned before Naas and he should progress again, hopefully.
"To win it you need a horse that can travel, that can stay and can quicken."
Johnny Murtagh saddles and takes the reins of Altrustic for the 3.50pm contest.
"He was a bit green, slowly away, but he came through the field and learned plenty" - Aidan O'Brien
Meanwhile, Roger Varian is hoping Kingston Hill will vindicate the decision to supplement him.
Kingston Hill is unbeaten in two starts and the Newmarket trainer is hoping the Mastercraftsman colt can step up to the mark.
"Kingston Hill has done nothing wrong and has won both his starts. I have been very happy with his condition since he won the Autumn Stakes two weeks ago," the Newmarket trainer told www.varianstable.com.
"The trip and ground should be fine and, although this is another step up, I am confident that he will be there or thereabouts."
Doncaster has been a particularly lucky place for Varian. His first winner came at the track in March 2011 after he took over the reins at Kremlin House stables when the late Michael Jarvis retired.
Jarvis sent out the winner of this race in 1980 when Beldale Flutter defeated none other than Shergar.
"We thought about it pretty seriously (supplementing), it wasn't a light decision," Varian told At The Races.
"We've been extremely pleased with him since he won the Autumn Stakes and it certainly looks like he could take another run.
"He's come out of the race well, there's a chance he could improve and he's shown that he can handle cut in the ground.
"It's a very good race but we think he's got the profile that made us think about it and on reflection we felt we better put him in the race.
"Hopefully it won't be gluey ground, if it's wet they'll go straight through it."
The Michael Stoute-trained Snow Sky was supplemented on the strength of an 11-length romp at Salisbury on heavy ground earlier this month.
His jockey James Doyle believes the son of Nayef has all the staying attributes that will be needed in the conditions.
"He won well at Salisbury, it was desperate ground but he won well so he handles those conditions and seems to have come out of the race very well so he's definitely one to look forward to," Doyle told Racing UK.
"He's got a good staying pedigree and I think that is key on that type of ground, if you can handle the ground that counts for a lot."
The Charlie Appleby-trained Pinzolo was another of the four horses added at the confirmation stage at a cost of £17,500.
The Monsun colt battled on bravely to beat Red Galileo a head over a mile at Newbury after wininng on his debut at Newmarket.
"Thankfully the form of his maiden was franked by another of our horses this week and he's physically done very well since his last run," said Appleby.
"We couldn't be happier, the ground should suit and all in all we are hoping for a nice run."