Aidan O’Brien is ready for the “very special” Sun Goddess to prove she is one of the best he has ever trained when she bids to cap a phenomenal season in the John Deere Breeders’ Cup Juvenile Fillies Turf on Friday.

A winner of six of her eight starts with her only defeats coming on debut and then at Royal Ascot in the Albany Stakes, she has carried all before her since, winning three Group 1s along the way.

Having dropped back from seven furlongs to win the Cheveley Park Stakes in brilliant fashion at Newmarket last month, she now heads the other way and back up in trip, tackling a mile for the first time and seeking a top-level win at her third different distance.

“Sun Goddess has a long stride and a great mind. She has great speed and is big and scopey,” said O’Brien.

“I didn’t think she would be early when we started her and she just loved her work. She’s by Sioux Nation and that’s a speed angle.

“Johannesburg won four Group 1s in different countries, including the Breeders’ Cup Juvenile (on dirt), but he wasn’t as scopey as this filly, who is on springs.

“She looks very special and looks like she could be (the best I’ve trained). She very special and very unique in everything she does.”

Sun Goddess will be stationed in stall nine in a race which will see her lock horns with Prix Marcel Boussac winner Green Empress – trained by O’Brien’s son, Joseph – for a fourth time this season.

“She’s able to go a very quick tempo and though she’s drawn out a bit she has a big, long, open stride which will help her,” continued O’Brien.

“She cost £120,000 which is a lot of money, but for what they can make she was not too expensive.”

There are three other Irish-trained runners in the Juvenile Fillies Turf - Curracloe (Johnny Murtagh), Alwaysanangel (Joseph O'Brien) and Ballinea Star (Robson de Aguiar). The race is due off at 8.15pm Irish time.

Rest of Friday card

Also in action on the opening night for O’Brien – who is locked with Bob Baffert on 21 Breeders’ Cup victories – are Florida Bay and Haffner, who will go to post bidding to give O’Brien a fifth straight victory in the Brown Advisory Breeders’ Cup Juvenile Turf (9.35pm).

O'Brien also declared Man's Best Friend for this race but he was deemed a non-runner on Friday morning, while another of the yard's intended runners in that race, Great Barrier Reef, is due to undergo further veterinary checks before being given the all-clear.

“Haffner, you would imagine, would get the trip very well, I just hope it’s not too tight for him," said O'Brien. "We saw when he got a strong-run mile at Newmarket that he’s going to get a mile and a quarter next year.”

Joseph O'Brien runs the Group 1-placed Folsom Blues in this race.

The five Friday championship races begin at 6.55pm with the Juvenile Turf Sprint. The two Irish-trained runners in this five and a half furlong race are Paddy Twomey's Velozee and Robson de Aguiar's Force Noir.

As usual, there are no European-trained runners in either the Juvenile (8.55pm) or the Juvenile Fillies (7.35pm), both on dirt. Brendan Walsh, originally from Shanagarry, trains Juvenile Fillies favourite Emphatic, while Bob Baffert has the market-leader for the Juvenile in the shape of the unbeaten Hughes.