Aidan O’Brien provided an update on his two Arc contenders, Minnie Hauk, who is set to be supplemented at tomorrow’s stage, and Los Angeles ahead of Sunday’s showpiece.

The Ballydoyle handler hasn't landed Europe's middle-distance showpiece since Found led home a one-two-three for the stable nine years ago, but he looks to have every chance this season as Minnie Hauk attempts to stretch her unbeaten run to six following Group 1 wins in the Epsom, Irish and Yorkshire Oaks.

"She was obviously a very expensive yearling," explained O'Brien. "We always liked her a lot, but we didn't rush her, we let her take her time.

"We knew she had a bit of catching up to do this year because she only had the two runs at two, so she started in an Oaks' trial at Chester. We then went from there to Epsom and the rest of history after that.

"When she went to Chester, she was just ready to start, so she did progress a lot going into Epsom. We were happy with what she did at Epsom, then she made plenty of progress to the Curragh and York.

"She's slowly coming along and seems to be progressing all the time. We're very happy with her, she's done everything we've asked since. Her work has been lovely, and Christophe (Soumillon) sat on her during the week, and he was very happy with her. He did a nice half-speed piece of work on her."

On the prospect of Minnie Hauk running in a big field, O'Brien added: "You're never sure but she's very straightforward usually.

"She's always happy to go forward and she's uncomplicated. She's a good, strong traveller, she has pace early and she usually finds things easy enough to get a position so hopefully will be ok."

Whilst Minnie Hauk will arrive in Paris on an upward trajectory, Los Angeles will be looking to get back to something near his best having failed to match the form of his Tattersalls Gold Cup success in three subsequent runs, finishing fifth in the Prince Of Wales's Stakes at Royal Ascot before fourth-place finishes in both the Royal Whip and over the Arc course and distance in the Qatar Prix Foy.

O'Brien said: "He went to Ascot, and the race went a little bit wrong on us. He probably had a harder race than we would have liked.

"The plan was to always give him a little rest after that, but it just took him more time to fill back up again. He ran a lovely race on his first start back at the Curragh and his next run back in Paris Longchamp we were very happy with, and we think he's gone the right way since.

"We've been happy with his work since, and he's been in good form. We felt maybe he was two weeks behind in work on his first run back and a week behind on his last run. We think he's caught up and we couldn't be happier."

O'Brien also confirmed his proposed jockey bookings, with Christophe Soumillon set to partner Minnie Hauk for the first time, while Wayne Lordan looks poised to ride last year's third Los Angeles.

"It looks like it will probably be Wayne (Lordan) on Los Angeles and obviously, Christophe on the filly," said O'Brien.