Steve Asmussen has the surface on his mind ahead of Curlin's bid for Breeders' Cup Classic glory.

The trainer is thrilled with his preparations but admits he doesn't know how he will handle the Pro-Ride track.

"The horse looks beautiful," Asmussen said. "The weather is still going to be in play, it's been pretty warm. But that's why we brought him out here in advance, to give him a chance to adjust, just like we did in Dubai.

"Will he run his race on a synthetic surface? That's the huge question. And that's why all the handicappers haven't him picked him in their selections. You wouldn't see that if this race were on the dirt."

Speaking about his emotions surrounding Curlin, Asmussen said, "What a catalyst he's been for great experiences, for our entire family. We have a room at the house with photos of all the races he's won. He's got his own room."