It is certainly not restricted to Tulloch Lodge, which might have a golden generation of juveniles but will not have things all its own way.

Champion trainer Chris Waller will bring another unbeaten colt, Switzerland, who has stepped up with every appearance and was simply too strong late for Silver Slipper winner Straight Charge in the final 100m of the Todman Stakes.

He is the $4 second pick and has the services of premier jockey James McDonald after Coolmore decided to bring Ryan Moore out from Europe to ride Storm Boy.

“He has a lot more to give and we haven’t reached the bottom of him yet,” McDonald said. “He will be better again on Slipper day.”

The clash of the two unbeaten colts will be the focus but the raiders from Melbourne cannot be discounted. Southern form provided the Pago Pago Stakes and Magic Night Stakes winners on Saturday: Dublin Down and Drifting.

The leading chances from Melbourne will arrive during the week with the underestimated Blue Diamond winner Hayasugi looking for some more history.

She is only the second filly to complete the Preview-Prelude-Blue Diamond treble, following in the footsteps of Midnight Fever in 1987.

Her racing style of getting back and relaxing before powering through her gears was too much for another Waterhouse-Bott contender – Lady Of Camelot ($15) – in the closing stages of the Blue Diamond.

The last colt to complete the Blue Diamond treble was Sepoy, who came to Sydney and lifted the Golden Slipper in 2011.

“I have always thought that the more pressure in the races, the better she will get,” Hayasugi’s trainer Clinton McDonald said.

Loading

“She has won those three races with things going against her in the run, but Jamie [Kah] has found a way to get clear and win. We were confident in her going into the Blue Diamond as we are for the Golden Slipper.

“She has put on weight since the Blue Diamond and we are ready to come up to Sydney and show how good she is.”

McDonald’s late father Ross trained Courtza to take out the Blue Diamond and Golden Slipper in 1989.

“I have talked about the two fillies with Mum a lot in the last couple of weeks. Courtza did it and I think this filly is a good chance of doing,” he said.

“It takes a very special horse to do what she has done in Melbourne and I’m happy for them to underestimate her again.”

Sports news, results and expert commentary. Sign up for our Sport newsletter.