RTÉ Racing analyst Jane Mangan expects Aidan O'Brien to rule again on day two of Royal Ascot.

O'Brien and Ryan Moore notched a double on Tuesday, Circus Maximus taking the St James’s Palace Stakes after Arizona had given O'Brien a ninth success in the Coventry Stakes.

Today he aims Magical at the Group 1 Prince Of Wales's Stakes (3.40pm), and Mangan predicts the Ballydoyle trainer will prevail in a cracking contest. 

She told RTÉ Radio 1's Morning Ireland: "This is for me the race of the week. It's so exciting. There's only eight runners but every horse has top quality form.

"Sea Of Class and Magical, the two fillies, they're the two keys for me. The colts Waldgeist and Crystal Ocean, as good as they are, I don't think they'll be able to concede the gender allowance to fillies of this class. 

"Magical, three in a row at the Tattersalls Gold Cup at the Curragh last time, narrowly beaten by Enable in the Breeders' Cup last year.

"Sea Of Class, superstar in the Irish Oaks last year, narrowly beaten by Enable in the Arc.

"So we've got everything here bar Enable. I feel at the start of the year Magical was set out with the aim to win the Arc but she's just picked up a Group One along the way.

"Sea Of Class, this is her seasonal debut, it's a huge ask in her first run of the year to beat horses of this quality. 

"Aidan O'Brien proved his horses are in rude health yesterday with a double. I think today he has two serious chances courtesy of Magical and I Can Fly."

I Can Fly goes in the Group Two Duke Of Cambridge Stakes directly after the Prince Of Wales's Stakes and Mangan expects her to complete another O'Brien double.

"I Can Fly is a huge filly on this ground. We saw yesterday the rain was teeming down, people in their gladrags getting absolutely soaked! This will really help the chances of I Can Fly.

"She'll appreciate the ground. She ran a horse like Roaring Lion to within a half a length last year on his ground over this trip at this track. She's the filly they all have to beat."