AIDAN O'Brien reports Happily back in 100% shape for the Breeders' Cup Juvenile Fillies Turf after a slight setback forced her to miss the Fillies' Mile at Newmarket last month.

The Ballydoyle trainer revealed the Moyglare Stud Stakes and Prix Jean-Luc Lagardere winner missed no significant exercise when laid low and will be cherry ripe for Friday's test at Del Mar.

He told www.attheraces.com: "She's in good form and has done well to win two Group 1s already. She missed the Fillies' Mile after a slightly bad scope, but she didn't miss any important work because of it and it shouldn't have any bearing on her chance this week."

He added: "On her pedigree, you'd think better ground would suit her, but to be fair she has handled softer ground very well in her last few starts and it would be hard to say that she could be any better on firmer ground.

"She stays well and I'd say there's a good chance she could get a mile and a half next year."

O'Brien also saddles September, who was third behind Happily in the Moyglare before failing by a just a nose to land the Fillies' Mile.

"September had a nice run in the Fillies' Mile," the trainer said.

"She ran a very good race but she didn't get a clear run. We were delighted with her run, really.

"She is by Deep Impact and I think they handle quicker ground. She had a few lesser runs in between, but her last run was coming back after a little break and the ground was a little slower as well.

"She isn't the biggest, but she has a fantastic pedigree and plenty of ability to go with it."

Juliet Capulet is stepping up to a mile for John Gosden after she edged out Nyaleti in the Group Two Rockfel Stakes at Newmarket over seven furlongs.

Chris Richardson, managing director of owners Cheveley Park Stud, said: "She came out of the Rockfel extremely well and John Gosden suggested she might be an ideal candidate to have a go over there.

"I know it is a mile, but I think you have to stay seven furlongs well which she does.

"It was a good performance in the Rockfel. She is beautifully-bred and there is plenty of speed in the family.

"She couldn't have done it any more easily, but she is a filly that has taken a bit of time for the penny to drop.

"That is why she has had a bit of headgear, to make her concentrate, but she doesn't need that any more, as she showed at Newmarket."

DEWHURST FORM ON TRIAL

Aidan O'Brien relies upon Mendelssohn in the male version of the Juvenile Turf, also on Friday's cardy.

The son of Scat Daddy outran his odds of 50/1 when second to stablemate U S Navy Flag in the Dewhurst.

"Mendelssohn had a big jump up in his last run - his first two runs he was very green, he has just taken his time learning," said the Ballydoyle trainer. We put the blinkers on at home in his last piece of work and he grew another leg, that is why we left them on."

The other Irish raider is Gordon Elliott's Beckford, who was fifth to US Army Flag in the Middle Park Stakes on his latest start.

Charlie Appleby feels Masar has the right credentials to run a big race in the Grade 1 contest.

The son of New Approach goes into the one-mile race with a Group 3 success in the Solario Stakes under his belt, followed by a good effort to take third place in the Prix Jean-Luc Lagardere.

"I think the ground will suit him and he will get the trip, no problem," said Appleby. "He has been over the trip, having finished third in the Lagardere. He has come out of that well and I think he has got a nice profile going into the Breeders' Cup.

"He has got enough experience under his belt and he is quick ground horse, so he ticks a few boxes."

George Scott has his fingers crossed James Garfield can last out the mile after winning the Mill Reef Stakes over six furlongs in tremendous style.

"It's always a little bit concerning when you fly a horse, especially first time with a young horse, but he's eaten and hasn't spiked a temperature and has held his condition well," Scott told At The Races.

"I haven't done too much with him since the Mill Reef, but certainly physically he's probably stronger than he was when he into that race, just because of the time of the year. He's had a bit more time to grow and strengthen up.

"On the ratings he has to improve, but he won a Group 2 pretty convincingly and broke the track record in the process. If he does need to take another step forward, I'm sure he's capable of doing that."

Richard Spencer is hoping Rajasinghe can return to the form that saw him win the Coventry Stakes at Royal Ascot.

"He's in good form and travelled over well. We're very happy with him," said the Newmarket handler.

"I think the ground was the reason he didn't perform to his best last time. It was a bit on the slow side and hopefully we'll get fast ground out here. The trip should be fine. He's been finishing his races off well.

"If you put a line through his last run, he's finished close in the July Stakes behind Cardsharp and U S Navy Flag and that puts him right in with a chance.

"It's nice to be here. It's something we've not taken lightly."

Richard Fahey's Gimcrack scorer Sands Of Mali completes the British bid.