O'Briens aiming for Breeders' Cup history
Joseph O'Brien would become the youngest winning trainer in Breeders' Cup history - and his brother Donnacha the youngest jockey - should Intricately prevail in the Juvenile Fillies Turf tonight (10.50pm Santa Anita).
The daughter of Fastnet Rock provided the fledgling handler with his first Group One success since taking out a licence when she sprang a surprise in the Moyglare Stud Stakes at the Curragh in September.
It was also a first top-level success for 18-year-old Donnacha and the brothers will team up once more in California.
Joseph O'Brien currently holds the record for being the youngest jockey to ride a winner at the showpiece fixture after steering his father Aidan's St Nicholas Abbey to victory in the Breeders' Cup Turf five years ago.
Asked about the tantalising prospect of making history once more, O'Brien said: "That would be seriously frightening, but we can dream it will happen.
"My first Group One with this filly in the Moyglare was very special and I wasn't totally surprised, because she had finished very close behind her rivals in her prep.
"I'm delighted by the way she has travelled over here and her work on the track has been good.
"It's a completely different task and until the day I'm not sure how much it will play to her strengths.
"I'm not worried about the ground, that will be fine, but I am concerned about the tightness of the track.
"It could be a problem, but let's hope not."
Aidan O'Brien is double-handed in the mile contest against his son, with Hydrangea and Roly Poly both leading contenders.
Hydrangea was runner-up to Intricately in the Moyglare before chasing home stable companion Rhododendron in the Fillies' Mile at Newmarket.
Roly Poly was last seen finishing a close second in the Cheveley Park Stakes and will be ridden by Ryan Moore.