Aidan O'Brien says So You Think's days as a middle-distance runner might be numbered after the entire finished unplaced in the Breeders' Cup Classic.O'Brien, who earlier celebrated Breeders' Cup victories with St Nicholas Abbey and Wrote, said there was no disappointment from the Coolmore camp over So You Think's sixth placing behind longshot winner Drosselmeyer."He's run a great race and we are very happy with him," O'Brien said of the two-time Cox Plate winner."He's a horse with a lot of speed

Aidan O'Brien says So You Think's days as a middle-distance runner might be numbered after the entire finished unplaced in the Breeders' Cup Classic.

O'Brien, who earlier celebrated Breeders' Cup victories with St Nicholas Abbey and Wrote, said there was no disappointment from the Coolmore camp over So You Think's sixth placing behind longshot winner Drosselmeyer.

"He's run a great race and we are very happy with him," O'Brien said of the two-time Cox Plate winner.

"He's a horse with a lot of speed, and we were probably going the wrong way with him in that sense.

"(Jockey) Ryan (Moore) said they weren't going quick enough for him, and I look forward to going back to a mile with him.

"He'd have no problem with that distance.

"I was very excited looking at him today, and we are getting a picture in our heads of what he is.

"I don't think the dirt was any problem, but I would say distance-wise we should come back rather than go forward.

"If he didn't have the speed I think he has, he wouldn't want to get on with it like he did tonight. We are still learning a lot about him."

Since a controlling interest in So You Think was sold to breeding giant Coolmore Stud, the five-year-old has raced eight times for O'Brien.

Seven of those starts have been at Group One level and have netted wins in the Tatts Gold Cup, the Eclipse Stakes and the Irish Champion Stakes.

Asked to sum up the day after earlier seeing St Nicholas Abbey storm to glory under his 18-year-old son Joseph in the Turf, O'Brien said: "It's something I can't put into words, it's just been one of those really special days.

"It's magic for Joseph. He has been doing it since his eyes were open, and he knows the horses better than me.

"From the time he was six he has been coming to the Breeders' Cup, and he's never known anything else."